Ok, the Gainward Geforce 6800GT is an AGP 8X card, so if your motherboard has an AGP 8x slot, you should be good to go. Additionally the Geforce 6800 cards require (Nvidia suggests) at least a 350w power supply. The card also requires a power supply with a video card power cable. If you don't already have one that meets these requirements, I recommend getting a good power supply that does (look around online, look at lots of reviews, look at PSU 101, you'll find a good one).