Freelancer running on a Mac?

[Anaximander]

Unless they've radically changed Bootcamp you don't need an external drive; just a working Windows disc and a working serial. Make sure you've got some empty CD's or DVD's and start up bootcamp on the Mac (it's in the "Utilities" folder, I believe), it will explain everything and burn a disk with windows drivers and other applications for the macbook so you get (some of that) sweet apple reliability in windows / less hassle with drivers. Just follow the instructions on screen, it's dead easy and works perfectly.