Ok this may be a dump question but give me a break, im new at this mac vs. windows thing. Is it possible to use an external HD attached to an iBook that has windows XP on it and use it as a book disk and run XP off of it? The reason I ask is because my brother is going to take my PC away from me when I get my iBook since he bought most of it. But the HD is mine and I really want to keep playing City of Heroes after he takes it from me. So I ask again, can I hook up an external HD with winXP on it and run it through my iBook?? Does this even make sence??