Moderator: Please include a warning in the blurb that this update does not include G5 processor support.

From the Microsoft Virtual PC FAQ/Support Page (link opens new window):

We know Mac users are excited to take advantage of the speed of the new Power Mac G5 processor to run Virtual PC for Mac and PC programs. Microsoft is currently working on the next version of Virtual PC for Mac, which will run on the G5. Watch the Mactopia newsletter for updates.