theres emulators for pretty much anything....even playstation 2!! but working ones with commercial games arent about.
even the n64 emulators are quite buggy...but neo geo, megadrive, snes, etc....all work as well as your console ever did.
neo geo was THE BEST for fighting games....so many and the king of fighters and street fighters cant be beaten on ANY SYSTEM in my opinion...playablity never got any better
if any1 fancies a link up then join my site and im sure we will get a game sumtime