Ah, yes. Emulators.

Emulators are indeed nifty programs, but at the moment are a bit of a gray area in the legality end of things. Still, you can find a lot of Emulators and games (called ROMS) to run on them at http://www.emux.com and http://www.classicgaming.com .

Or, if you're interested, you can take a look at my ROM collection at http://www.delanet.com/~drendall/files/romlist.txt . Nag me if you want anything...

-Zero the Inestimbable