I very recently installed Vista using Boot Camp, Parallels and VMware on my MBP. I set the partition to 20 gb, and I currently have 10 gb free after the install. I didn't enter my license number yet, because I wanted to be sure it was enough space. My question is 10 gb, enough to install games, such as the Orange Box or Crysis, over time I might install up to 10 games, and very few programs. Would this be enough space to do so? Also as far as Vista licenses, are they regestered to your computer, so if I decided to change later on I could, or if the partition is deleted, a new operating system must be purchased. In addition, does Time Machine back up the partitions, so if a computer crashed, the OS could be used again, Thanks.