I downloaded 64 bit Windows 7, partitioned my disk using boot camp, and installed it successfully on my late 2008 MacBook (13.3", 2.4GHz, 4GB RAM). It was only then I found out that MacBook boot camp drivers do not support 64 bit Windows 7. WHAT??? However, when installing 32 bit Windows 7, I had very little trouble. I am up and running in both boot camp and parallels. The only real glitch was when it came to set up of parallels tools. I had to manually set up and it took longer than usual, but Mac took me through it. Windows 7 is a nice little program, but I really don't see the difference between it and Vista 32 bit SP1. I'll re-post in a few weeks if I observe anything worth noting.