I'm getting pretty much the luxury PC, with a few changes (more RAM for instance, and I already have all the peripherals so I won't be getting any of those). My question is this: besides the OS, what else do I need to buy to actually put this PC together? I've got a case, a mobo, processor, hard drives, disc drives, GPU, RAM, and power supply. Most of them the ones right here on this page. What else do I need to get? Any cables, thermal compound, etc? I've never built a PC before, but I'm pretty competent with them (I've upgraded video cards, power supplies, and RAM in several of my past PC's and even swapped out hard drives).