Windows 7 64 bit on MacPro

I upgraded to a larger hard disk recently and had to recreate my bootcamp partition. When it came time to install Windows stuff, none of the CDs/DVDs worked. The problem turned out to be my two-year-old SuperDrive -- apparently there have been larger than average numbers of failures in Apple laptop optical drives. Since I was still under AppleCare, I had the optical drive replaced and voila -- no more problems.