i just got my mbp couple days ago. i use it for accounting and office work, and sometimes surfing internet so i think windows xp pro is the right choice for me until i heard about windows 7. my question is whether i need to upgrade to windows 7 on my mac for the above purposes. also, if it's necessary to upgrade to windows 7 within the next couple years in order to run 64bit windows compatible accounting or office software, how do i make a clean uninstall of windows xp pro?