friend wants a cheap spec pc knocking up.I have made a list of bits but want to check if its ok first.Budget is only £450.O CZ 2GB (2x1GB) PC2-6400C4 Dual Channel Platinum Revision -Hitachi Deskstar T7K500 500GB SATA-II -Intel Core 2 Quad Pro Q6600 -OcUK GeForce 8600 GT 512MB -Asus P5N-E SLi nForce 650 -Corsair TX 650W ATX2.2 SLi -Thermaltake VA3000BNA Tsunami Dream SuperMidi Aluminium Tower . I have a rewriter and a freezer 7 pro for the cpu.Is there anything i should change or anything i have missed out before i order it.If u could check i would be gratefull .thx