Hi, I'm new and have never used a mac other than at school to surf the net. I heard people said you can partition your Window desktop so that it can run Mac OS, is that true? and what do they mean by partition? I have seen desktop that can choose to run either Vista or XP (when u turn on the comp), but can it also have an option to run Mac OS X? if so, how do you do it? instructional videos would be great. and once I get a Mac OS on my non-mac computer, will i be able to use it like it was a iMac?