Hey guys I'm new to the forums and to Mac!! I just wanted to ask, what's the best partition size for installing Vista Ultimate 64bit? I'm switching from Windows XP but I THINK the only Windows things I would use are games, Office 2007, and Photoshop? I have music and video but I plan on leaving that all to the Mac as I want to switch my video editing to Final Cut rather than the old Windows options.. I have no idea what the requirements are for Vista and how much space future service packs will take!! Thats why I ask! My new Macbook Pro (hasn't arrived yet) has the 200GB 7,200RPM Hard Disk, I was going to partition 40GB for Vista Ultimate (only because my old laptop had 40GB and that lasted 5 years!). Thanks for your help and advice! ** Also I don't understand why some people recommend trying to install windows onto an external hard disk? I read something about repairs can't be made on a hard disk that is partitioned with Windows? Bootcamp doesn't allow installation on externals does it?