MAME is all over the board. I think there are some emulated games which don't run properly on any modern computer. But if you want to play Ms. Pac Man, you can do that on a Pentium 200 (at least with an older version of MAME, I understand newer builds have become slower in the interest of removing "speed hacks") For N64 emulation you should have a decent Directx9 card. Doesn't need to be too fancy. Seems to work even with Intel integrated graphics. I've seen the recommended CPU speed as 1.2ghz P3 or better. Personally I would buy a 2.8ghz or better processor, just based on the price/performance ratio. I picked up an Athlon 64 3000+ motherboard+CPU for just $140 last month. Time is money, given how cheap processors around 3ghz are, I don't see it as being cost effective to buy something that you'll need to upgrade again soon. -- Rob