SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                        SCHEDULE 13D/A (Amendment No. 6)

                   Under the Securities Exchange Act of 1934


                              SYNERGX SYSTEMS INC
               -------------------------------------------------
                                (Name of Issuer)

                         Common Stock, $.001 Par Value
               -------------------------------------------------
                         (Title of Class of Securities)

                                   871 60C 106
               -------------------------------------------------
                                 (CUSIP NUMBER)

                           Dennis P. McConnell, Esq.
                        c/o Dolgenos Newman & Cronin LLP
                          1001 Sixth Avenue, Suite 1215
                            New York, New York 10018
                                 (212) 925-2800
                -------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                               August 31, 2005
            --------------------------------------------------------
            (Date of event which requires filing of this statement)



If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4) check the following box [ ].

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934, as amended (the "Act"),  or otherwise  subject to the  liabilities of that
section of the Act but shall be subject to all other provisions of the Act.


                                 SCHEDULE 13D/A

CUSIP No.  871 60C 106
--------------------------------------------------------------------------------
        1   NAME OF REPORTING PERSON
            S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Genterra Inc. (f/k/a Mirtronics Inc. and Genterra Investment Corporation)
        ------------------------------------------------------------------------
        2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]   (b) [ ]
        ------------------------------------------------------------------------
        3   SEC USE ONLY
        ------------------------------------------------------------------------
        4   SOURCE OF FUNDS*
                 WC
        ------------------------------------------------------------------------
        5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
            PURSUANT TO ITEMS 2(d) or 2(e) [ ]
        ----------------------------------------------------------------------
        6   CITIZENSHIP OR PLACE OF ORGANIZATION
                 Ontario, Canada
        ----------------------------------------------------------------------
        NUMBER OF      7   SOLE VOTING POWER
         SHARES            889,540
                     ---------------------------------------------------------
      BENEFICIALLY     8   SHARED VOTING POWER

         OWNED BY 0
                     ---------------------------------------------------------
           EACH        9   SOLE DISPOSITIVE POWER

        REPORTING          889,540 shares
                     ---------------------------------------------------------
       PERSON WITH    10   SHARED DISPOSITIVE POWER
                           0
        ----------------------------------------------------------------------
        11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                          889,540 shares
        ----------------------------------------------------------------------
        12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
             SHARES*  [ ]
        -----------------------------------------------------------------------
        13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                 17.13 %
        -----------------------------------------------------------------------
        14   TYPE OF REPORTING PERSON*

                 CO
        -----------------------------------------------------------------------
 *SEE INSTRUCTIONS BEFORE FILLING OUT!


                                 SCHEDULE 13D/A


ITEM 1.   SECURITY AND ISSUER

     The class of equity  securities  to which this  statement  relates  are the
shares of common  stock,  par value  $.001 per share (the  "Common  Stock"),  of
Synergx  Systems Inc.,  (the  "Company") a Delaware  corporation,  which has its
principal executive offices at 209 Lafayette Avenue, Syosset, New York 11791.

     On July 25, 2003, the Company  effected a two-for-one  (2:1) stock split of
the Common Stock which is reflected in the holdings reported herein.


ITEM 2.   IDENTITY AND BACKGROUND

     This statement is filed on behalf of Genterra Inc.  ("Genterra")  which was
formed December 31, 2003 by the amalgamation of Mirtronics Inc.,  ("Mirtronics")
and  Genterra  Investment  Corporation   ("Investment").   Genterra's  principal
business address is:

         106 Avenue Road
         Toronto, Ontario
         Canada M5R 2H3

     At a  shareholders  meeting held on March 27,  2003,  the  shareholders  of
Mirtronics and Investment approved the amalgamation of the two companies to form
Genterra . The amalgamation was effected on December 31, 2003.

     In the  amalgamation,  shareholders  of Mirtronics  received 1.25 shares of
Genterra Class A Shares for each share of Mirtronics common stock and 1 share of
Genterra Class C Preferred Shares, Series 1 for each share of Mirtronics Class B
Preferred Shares.

     After the  amalgamation,  Mirtronics  shareholders and Genterra  Investment
Shareholders  owned  63.52% and 36.48%,  respectively,  of the voting  shares in
Genterra.

     For a more detailed  description of the  amalgamation,  we refer you to the
Registration  Statement  on Form F-4,  filed with the  Securities  and  Exchange
Commission on December 11, 2003, file number 333-103743.

     Neither  Genterra nor any of the persons  listed on Schedule A has,  during
the last five years,  been convicted in any criminal  proceeding and has not and
is not subject to any  judgment,  decree or final order as a result of any civil
proceeding,   enjoining  future  violations  of,  or  prohibiting  or  mandating
activities subject to, federal or state securities laws or finding any violation
with respect to such laws.

     Set forth on Schedule A is the  information  required by Item 2 of Schedule
13D concerning  each executive  officer,  director and control person of each of
the Reporting Persons.


ITEM 3.   SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
          -------------------------------------------------

     Prior to the  amalgamation,  Mirtronics  effected three  transactions,  not
previously  disclosed on Schedule 13D, that resulted in an ownership interest in
1,452,624 shares (31.03%) of the Company's Common Stock. In these  transactions,
it sold, in negotiated private  transactions,  an aggregate of 340,000 shares of
Common  Stock -  280,000  on  October  17,  2002  and  60,000  on June 3,  2003.
Mirtronics  also exercised  Common Stock purchase  warrants to purchase  620,000
shares on December 11, 2003. The transactions were previously reported on either
Forms 4 or 5. The source of funds used in connection  with the warrant  exercise
was Mitronics' general working capital.

     As a  result  of the  amalgamation,  Genterra  succeeded  to the  ownership
positions of both Mirtronics  (1,452,624 shares) and Investment (161,666 shares)
which aggregated 1,614,290 shares.

     In  September,   2004,   Genterra  sold  25,000  shares  in  two  brokerage
transactions at an average price of $2.89 per share.

     In December, 2004 Genterra sold 15,000 shares in two brokerage transactions
at an average price of $3.71 per share.

     During the period of August 12 through August 31, 2005,  Genterra  effected
open market broker  transactions  to dispose of 684,750  shares of the Company's
common stock at various prices ranging from $2.40 to $3.10 per share.


ITEM 4.   PURPOSE OF THE TRANSACTION

     The information contained in Item 3 is incorporated herein by reference.

     The  Reporting  Person  currently  has filed  Forms 144 with the  intent of
selling an aggregate of up to 684,750  shares of Common  Stock,  of which it has
sold, as of the date of this Schedule 13D, 684,750 shares.  The Reporting Person
does not have any present  plans or proposals  that relate to or would result in
any of the actions  required to be  described  in Item 4 of  Schedule  13D.  The
Reporting  Person may,  at any time,  review or  reconsider  its  position  with
respect to the Company and formulate  plans or proposals  with respect to any of
such matters, but has no present intention of doing so.

     The  Reporting  Person  may in the future  consider a variety of  different
alternatives  to  achieving  its  goal  of  maximizing  their  value,  including
negotiated transactions,  tender offers, proxy contests,  consent solicitations,
or other actions.  However, it should not be assumed that such members will take
any of the  foregoing  actions.  The  Reporting  Person  reserves  the  right to
participate,  alone or with others,  in plans,  proposals or  transactions  of a
similar or different nature with respect to the Company.

     The Reporting  Person  intends to review its investment in the Company on a
continuing  basis and,  depending on various  factors,  including  the Company's
business,  affairs and financial  position,  other  developments  concerning the
Company,  the price  level of the Common  Stock,  conditions  in the  securities
markets  and  general  economic  and  industry  conditions,  as  well  as  other
investment  opportunities  available  to it, may in the future take such actions
with respect to its  investment in the Company as it deems  appropriate in light
of the  circumstances  existing  from time to time.  Such  actions may  include,
without  limitation,  the purchase of  additional  shares of Common Stock in the
open  market  and in block  trades,  in  privately  negotiated  transactions  or
otherwise,  the sale at any time of all or a  portion  of the  Common  Stock now
owned or hereafter  acquired by them to one or more purchasers,  the purchase or
sale of derivative instruments the underlying security of which is shares of the
Issuer,  or the  distribution  in kind at any  time of all or a  portion  of the
Common Stock now owned or hereafter acquired by them.


ITEM 5.   INTEREST IN SECURITIES OF THE ISSUER

     (a) Genterra:

     (i) As a result of the  transaction  described  herein,  Genterra  is the
beneficial owner of 889,540 shares of Common Stock, which represents 17.13% of
the Common Stock that would be issued and outstanding.

     (A) Number of shares as to which such person has:

     (i) Sole power to vote or direct the vote: 889,540

     (ii) Shared power to vote or to direct the vote: 0

     (iii) Sole power to dispose or to direct disposition: 889,540

     (iv) Shared power to dispose or to direct disposition: 0



     Other than the transactions  detailed in ITEM 3 above, the Reporting Person
has not effected any transactions in the Common Stock in the past 60 days.


ITEM 6.   CONTRACTS,  ARRANGEMENTS,  UNDERSTANDINGS  OR RELATIONSHIPS
          WITH RESPECT TO SECURITIES OF THE ISSUER


     At the time of the transactions discussed under Item 3 above, the Reporting
Person had no plans or proposals  that would have resulted in any of the actions
required to be described in Item 4 of Schedule 13D. Provided,  however,  that on
January 20, 2003 Mirtronics entered into an amalgamation agreement with Genterra
Investment  Corporation  which resulted in them continuing  their  operations as
Genterra Inc. The Amalgamation was not effected until December 31, 2003.


ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS
          ------------------------------------------------

         N/A


                                   SIGNATURES
                                   ----------


     After  reasonable  inquiry and to the best of our knowledge and belief,  we
certify that the information  set forth in this statement is true,  complete and
correct. Pursuant to Rule 13d-1(k)(1),  we agree that this statement is filed on
behalf of each of us.


Dated: September 1, 2005

                                            GENTERRA INC.

                                            By: /s/STAN ABRAMOWITZ
                                            ------------------------------
                                            Stan Abramowitz, Secretary



                                   SCHEDULE A



I.     Genterra Inc.

    A. Directors

    1. Mark I. Litwin
       Business Address:                    106 Avenue Road
                                            Toronto, Ont., Canada M5R 2H3
       Principal Business Occupation:       President, Genterra Inc.
       Citizenship:                         Canadian

    2. Alan Kornblum
       Business Address:                    600 Clayson Road
                                            North York, Ont., Canada M9M 2H2
       Principal Business Occupation:       President, Distinctive Designs
                                            Furniture Inc.
       Citizenship:                         Canadian

    3. Irwin Singer
       Business Address:                    24 Hazelton Avenue
                                            Toronto, Ont., Canada M5R 2E2
       Principal Business Occupation:       Barrister & Solicitor
       Citizenship:                         Canadian

    4. Donald Resnick
       Business Address:                    2727 Yonge Street, Suite 614,
                                            Toronto, Ontario, Canada M5N 3R6
       Principal Business Occupation:       Corporate Director
       Citizenship:                         Canadian

    5. Stan Abramowitz - Secretary
       Business Address:                    106 Avenue Road
                                            Toronto, Ont., Canada M5R 2H3
       Principal Business Occupation:       Chief Financial Officer, Forum
                                            Financial Corp.
       Citizenship:                         Canadian


    B. Executive Officers

    1. Mark I. Litwin - President          See I(A)1

    2. Stan Abramowitz - Secretary         See I(A)7


    C. Control Person - none