I am trying to run windows on my 15" rmbp. I have never ran windows on either of my macs. i was wondering what purchase to make.My school has a windows 8 upgrade for $69. http://www.journeyed.com/item/Microsoft/Windows+8/1557102 Amazon has this copy of windows 7. http://www.amazon.com/Windows-Premi...647&sr=1-4&keywords=full+version+of+windows+7 What one should i buy to run on my mac. Thanks for the help i normally can figure stuff out for myself but i got lost on all this.