Another Note:
My P3-500MHz box runs everything pretty much but NBA JAM, Stun Runner, and maybe just a couple of others that get a little choppy. NBA JAM is playable, but not quite right. Again, this is based off of a 2 year old, DOS version of MAME.
I can't justify a new PC right now because I just bought a kick butt screamer of a PC, but it sits in my bedroom, the arcade is in the basement rec room, and my wife uses the new PC all of the time, so I can't combine them.