I just bought a new iMac and I need to be able to run Windows for AutoCAD. What is the best way to do this? I know Boot Camp will allow me to install a different OS, but besides that, I am in the dark. What is the safest way to do this? I also dont want to affect the overall speed of the iMac when runnning OSX (95% of the time). I think I am just going to install Windows XP, since I dont need Vista for any reason that I can think of. Also, how do I get a Windows instalation CD? Do I have to buy it at a store? Sorry if some of these questions are overly basic, I just want to install WIndows in the most efficient way possible. Thanks everyone.