UPDATE: After the defective SB cooling on my XFX, I went with the Asus P5N-T which appears to have a better cooling system. The problem I had now was that it would only boot 1/3 of the time. Do these installs ever go smoothly?!? Anyway, I realized it had a very early BIOS revision (0402) so I used the Asus EZ Flash 2 option in the BIOS menu and updated to the latest (0502) and the booting problem is solved. Asus has made it super easy to upgrade the BIOS; just point to the file on your hard drive! Now that I've turned the corner, I'm trying to get my existing Vista 64-bit load to work, but it seems to lock when trying to install the drivers. Clean install it is.