Hardware arrive today, but still need an OS. Already have xp, but need vista for Dx10 and vista only games (like Halo2)Cant decide between vista x86 or x64. Rig will be use 100% gaming, no multimedia or video encoding, and currently have a Intel E8400 cpu, and 2gb of memory. Im not planing going Quad core, at least for this year.Wish os you guys recommend for better gaming performance, Vista x86 or x64. will my Creative Xfi have problems with x64?I will purchase two more 2gb if vista x64 is the best choice.