I have no idea if this will work, but I am trying to install Windows Vista Build 5308 into a VPC image. The first hurdle that I ran into is that the drive partition is not automatically recognized by Vista. I rebooted my VPC session and on the second attempt, Vista recognized the partition. More info to come.
Update #1: Install completed.
Update #2: Having a devil of a time getting IIS7 to install.