Thing is with a macbook, you don't even need bootcamp to run windows, as the processor is a native x86 instruction set processor. I've got my mobile studio setup going on a macbook, windows xp pro sp2 w/ an m-audio firewire solo for my interface chained to my mackie compact mixer. like a few people stated earlier, you'll want to go with 2-4 gigs of ram for optimal performance, and an external firewire interface for quality audio.
If you wanted to go with a dual boot setup just so you can get the best of both worlds and use logic on the mac end, and whatever other DAW in windows, there are programs which allow you to mount hard drive partitions from each separate operating system (i use paragon ntfs from the mac end to have write access to my windows ntfs partition, and macdrive to mount macs hfs partitions in windows).
