EXHIBIT 3.2

                            Certificate of Amendment

              CERTIFICATE OF AMENDMENT TO ARTICLES OF INCORPORATION
                         FOR NEVADA PROFIT CORPORATIONS
          (Pursuant to NRS 78.385 and 78.390 - After Issuance of Stock)

1.   Name of Corporation:

         Ecostructure Corporation

2.   The articles have been amended as follows:

                                   ARTICLE I
                                NAME AND PURPOSE

     The name of the Corporation, hereinafter called the "Corporation" is:

                                "Winmark, Inc."

3.   The  vote by which  the  stockholders  holding  shares  in the  Corporation
     entitling them to exercise at least a majority of the voting power, or such
     greater  proportion of the voting power as may be required in the case of a
     vote by classes or series,  or as may be required by the  provisions of the
     articles  of  incorporation  have  voted  in  favor  of the  amendment  is:
     Unanimous.


4.   Effective date of filing (optional): Upon Filing

5.   Officer Signature (required):

                      /s/ Mark Winstein
                      --------------------------------
                          Mark Winstein, its President

Filed April 19, 2004
In the Office of Dean Heller
Secretary of State



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