Hello! This may be a silly question, but is it a big deal to upgrade from Windows 7 Home Premium 64-bit to Windows 7 Professional after first setting up your computer? I just bought my computer, which has Home Premium. I intend to buy the upgrade, but I want to wait until I get my school email, probably in a month or so, so I can buy the discounted "Academic" Pro upgrade. I would, however, like to set up my computer now just to see how it works. TIA!