I have a copy of Snow Leopard on the way and am wondering what I will have to do? Does you need to back up everything, or does it "dynamically" install? Either way, will I need to do anything to keep my bootcamp partition working? On another note, I currently have Vista Ultimate in bootcamp and want to change to Windows 7. Is there a way to "upgrade"? Or will I have to clean install and rebootcamp? Thanks!