I figured it out.
Appearantly there is a difference in the 1.3 version downloaded from microsoft and the 1.1 version from the windows2003 CD. The 1.3 version checks for Exchange in your environment, the 1.1 version does not. See my post elsewhere:
http://www.winnetmag.com/forums/messageview.cfm?catid=40&threadid=123078