So I'm buying a new MBP in the next day or two, and was wondering the best way to setup Bootcamp. I'm essentially getting a base configuration MBP with an 80gb hard drive. Do I need to setup Bootcamp right away, or can I wait until later until I decide if I really need to the ability to dual boot into windows? My main concerns are that 80GB is not all that much....and I'm not sure if I have to decide now how much to partition? For example, can I work on my laptop for a month, and then decide I want to setup a 20GB partition for windows, and then partition at that time? Or does it involve re-formatting the entire disk? How about if I partition say 40GB now for windows, but decide down the road I really don't need that much. Can I change that partition size and re-allocate some hard disk space back to the mac osx? Finally, can I setup bootcamp on an external harddrive and boot externally?