Alpha Male,
Virtual PC is not going to help your games famine. On the G4 chip, Virtual PC will not run fast enough to play PC games. It's really only good for non-graphics-heavy packages, such as Office. Switchers from Windows would typically buy it to run a "must have" package which hasn't been ported to the Mac; eg Sage for Accountants switching to the Mac.
If you have an Intel MacMini, Virtual PC won't work. To run Windows software in emulation, you'll need something like
Parallels. It's a lot faster than VirtualPC, but still won't run fast enough to play (graphics-intensive) Windows games. To run games properly on an Intel MacMini, you will need to install
Boot Camp and boot up as a Windows machine.
A good place to find games is
Macgold and
Macgamer is a review and news site dedicated to games on the Mac.
Applemacster