I've been reading all this stuff until my eyes have crossed, and not really sure if I have it all straight. I am trying to understand what are the different ways that you can run Windows on say an iMac. I don't really like Windows, but I may need it for a couple things. So there is a product that allows you to boot up in either Windows or OS X? There is another product that allows you to run Windows within an OS X window but it is likely to run at about half your normal processor speed? I am just having a rough time keeping it all straight.