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