If I have a .vhd file, can it be used by Virtual PC 2007, VirtualBox (open source), and Windows 7's Virtual PC (the newest Virtual PC)?
Can you even run Virtual PC 2007 on a .vhd file, and then shut down the virtual PC, and then run VirtualBox on that same .vhd file? (just for curiosity)
The .vhd file might be one downloaded from
which will expire Jan 1, 2010, or 120 days after its first use.