Is it true that using Microsoft Virtual PC 2007, you can copy the .vhd file (about 2GB) and you have "a new computer"?
For example, if you make several folders on your real physical PC
c:\xp01 c:\xp02 c:\xp03
and now, each one containing the .vhd file (about 2GB), then you are like having 3 computers all installed with XP to boot up, install software, and shut down, just like a real PC?
And when you don't want any of those PC, you can just delete that folder, and that's it.
If you like that state of a computer (the software installed, bookmarks, etc), you can shut down that virtual PC, copy that folder to
and you will have a new virtual PC with that exact setting. And when you want a new virtual PC, then you can just copy that to
and you can use that virtual PC until if you don't want it any more, delete that folder, and repeat the step of copying c:\xp_good again to another folder, and you will have a brand new virtual PC?