I recently purchased, before realizing that id have to purchase a new version of windows, a new motherboard. I also purchased a western digital caviar black, as my old hard drive is ancient. I want a fresh install of windows on my new hdd, but i am aware that to use the windows 7 oem i have currently i would have to keep my old (really outdated) motherboard. As i will have to repurchase windows, i was looking at windows 8, and the upgrade version is significantly cheaper than the full version, See Here. I was wondering whether i could hook up the new hdd with the old mobo, install windows 7 then upgrade to windows 8 and upgrade to new mobo. Is this possible/advisable, or do you another solution. Apologies, I am reasonably new to this.