right i just bought a laptop that came with win 7 upgrade disk, i up graded to win 7 32bit, can i upgrade to win 7 64 bit?? when i put the disk in it says "This installation disc isn't compatible with your version of Windows. To upgrade, you need the correct installation disc. For more information, check your computer's system information. To install a new copy of windows, restart (boot) your computer using the installation disc, and then select Custom (advanced)."