EXHIBIT 10.15

                          AMENDMENT TO PROMISSORY NOTE

      This agreement is to amend certain provisions of that certain $86,902
Promissory Note dated May 9, 2001 (the "Note") from Brian Derr ("Executive") and
payable to Apropos Technology, Inc., an Illinois corporation (the "Company").
Terms used herein but not defined herein shall have the meanings ascribed to
such terms as set forth in the Note.

      The references to April 1, 2002 in the Note are hereby replaced with April
1, 2003.

      The references to January 2, 2004 in the Note are hereby replaced with
January 2, 2005.

      Agreed and accepted to this 25th day of March, 2002.

/s/ Brian Derr                            Apropos Technology, Inc.
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Executive
                                          By: /s/  Francis J. Leonard
                                              -----------------------
                                          Its:  Chief Financial Officer
                                          Title: