I just nuked my hard drive for a fresh OS install from XP. I can't get the x64 disc to install windows. All I get is a message "The version of this file is not compatible with the version of windows you're running." This happens both when I open it from the desktop (currently have the 32 bit version running) and when I boot from the disc. Currently running Phenom 9550 cpu, 2gb ram, 7900gtx. The ram and vid card i'm planning on upgrading soon, once i get everything else figured out. What gives?