Well do you have a PCI-E slot? or just AGP?....got a price range? The SAPPHIRE Radeon X800GTO 100131 Video Card - OEM which is an awesome AGP card is currently running for 194.00 with 3.50 shipping at newegg....check out
http://www.newegg.com/ProductSort/Su...SubCategory=48
tons of very nice video cards depending on which slot you have and newegg is the best...
dougan