I have an ATI Radeon 9800 Pro and i also hav Doom 3. Well anyway i dont understan why i cant turn on anti aliasing i hate it how their skin looks kinda choppy. Well u kno how the ATI Radeon 9800 Pro has two wires. One connects to the power supply and the other connects to the hard drive. I connected it to the power supply but i cant find NO way to connect it to the hard drive. I called technical support and they said that it wasnt necessary. But im probably thinking if i dont connect it to the hard drive some of the fancy features like anti aliasing cant be turned on. So does anyone kno if this effects the game in any way?