Well, Considering you have a motherboard that is 2 years old, it may have a AGP 8X, or PCI Bus slot. Some boards don't even put a graphics slot to save money like the one on my brothers EMachines. You may have to get a new motherboard that supports PCI-E x16 to get the newer cards, (8800GT, 8800GTS, 7950GS,) Post your board, however I may be wrong.