Contact xpize
xpize is now developed by a team of dedicated individuals rather than a single person, so you will have to choose who to send your email message to.
Alternativly we recommend that you post your enquiry to our public forums, so if you're experiencing any problems with xpize other people can benefit from any solution you find.
The Forums
The forum for xpize is available at http://www.msfn.org/board/XPize-f112.html
Vize (a related project, for Windows Vista) has its own separate forum at http://www.msfn.org/board/Vize-f154.html
Discussion for Anolis, the open-source base for xpize and Vize is held on the Codeplex project page.