Hyper-V Program Manager
This is a fun little puzzle game. On each level you are given a laser gun (in a fixed position), a target and many obstacles. You then need to place angled mirrors in order to try and hit the target, and any bonus objects that you can. It is a simple premise, but lots of fun.
This game runs perfectly under Virtual PC, and you can grab a copy to play with from here.
That's nice, but where can I find a copy of DOS to play it with?
There is something called FreeDOS -> http://www.freedos.org/
I didn't know where to make a comment about the on-board graphics card Virtual PC uses so I just posted it here.
Virtual PC has a cheap on-board graphics card which is very annoying, especially when you got well lets say 4GB of system RAM and you have allocated 1GB of RAM to your Virtual Drive, now what the hell? Thats like saying I got a cheap on-board graphics card and 1GB of system RAM. Well here is a suggestion, allow Virtual PC to emulate your graphics card or one that is better then the current on-board crap.
Check out: http://blogs.msdn.com/virtual_pc_guy/archive/2005/11/21/494961.aspx and http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/26/361361.aspx