I have one of the early Macbooks, 1.8GHZ with 2GB of RAM [just upgraded] and 80GB harddisk. I want to switch the computer entirely over to windows and get rid of Mac OS altogether as I have a number of specialist Windows only programs that I need to run for work. I think my computer would be too slow or have too little memory to have both or to run parallels. Does anybody know of anywhere I can read up on how to do this transition? Ideally I'd like to wipe the HD and re-install everything. Do people recommend Windows XP or Vista? Any advice from people who have already done this would be much appreciated.