GeForce 6600 minimum for ANY game today, preferably 7900+(I use a 7900 and love it)

Also, my personal advice: NEVER EVER BUY PREMADE NAME BRAND COMPUTERS. EVER. They cost the same or more than a custom built with MUCH lower specs. Either learn to put 'em together yourself(it's REALLY easy, I've done it for years with no training whatsoever, though a little internet/friend help; most of it's common sense) or befriend someone who can And get much more bang for your buck. I spent about $500 on my new system(sans case/monitor, I used existing ones, replaced everything else including a SATA HD I've been too lazy to hook up since last year lol) and it runs 3 maximized WoWs with full graphics settings + mirc and wmplayer/winamp just fine; my sister's comp cost about the same, was a prebuilt eMachines, and it doesn't even have a dedicated videocard and little ram.