So I just joined the Information Systems department at my school and they have a deal with the Microsoft Website where they give out copies of windows software and serial #s. I happen to need some form of windows (Xp or Vista or what have you) to run some programs for my classes and I have some questions on how to install the OS. So i downloaded XP as an ISO and burned it onto a disk. I'm in the process of downloading Vista which doesn't come as an ISO, but i think just one big 2.5gb install file (I presume an EXE) and hope to use that instead. I just bought leopard and am going to install it so I can get bootcamp to install the OS but, 1.Will my copy of XP install on leopard? 2.Will i be able to run the Vista installer on leopard? 3. Can I install XP, then install Vista, then erase XP? 3. Do i need leopard or can I just stick with 10.4? 5. How would I install these two assuming I have them both on DVDs? Any help would be very, very much appreciated, I'm getting such a headache trying to figure this out. BTW, I'm sure I didn't download it wrong. Vista downloads as an installer for windows computers. This website isn't really for macs.