My fiancé recently purchased a laptop from dell, which caused her to be eligible for the $40 upgrade. She does not want to use the upgrade however, because she has some programs from work that are not yet compatible. Would it be possible to use that upgrade to install w8 onto my 2012 Mbp? I have no version of windows currently running on it, because I don't want to spend $100 for windows just to be able to run some games on it. $40 for W8 seems much more reasonable though. If I'm able to, could someone give me a step by step or link me to a reliable guide?