Brad Myers - Get Your Geek On

Just ran across this blog about turning your Windows XP into a multi-user version. Not sure if it works yet, but thought it's worth a try. Let me know if you get it working before I get a chance to try it..
http://riccardo.raneri.it/blog/eng/index.php/2006/04/24/windows-xp-multiuser-remote-desktop/