I would say don't do it. The hard drive is ridiculously small and you can't change the battery yourself, among other things. It also only has one usb port and no firewire. You can get a macbook, that can have up to 4 gb of ram(you'll want it) a hard drive that you can upgrade yourself for cheap, firewire connectivity (which you want for your external drive to run bfd on a dedicated 7200rpm drive.) And it has the same footprint as the air, its just not as thin. I had a macbook and now have a macbook pro. I love them both.