Hey, I'm going to start a new build soon and I've been looking at my choices for operating systems. I've heard a few positive comments about X64, but a lot of them are negative. If I went with XP Pro on a dual core machine, would I be limited to what I can do? Would programs/applications not work correctly? I'm afraid of buying XP Pro for an AMD Athlon 64 X2 3800 and it end up not working correctly with my programs. The build is going to be mostly for gaming.