Through the MSDN Academic Alliance, I got a free copy of Windows 7 Professional 64-bit edition with key. I burned the disc off of a PC and it showed up as a .iso on my 2011 21.5" iMac. I opened up the bootcamp utility and partitioned the hdd to like 35GB and then when prompted to select the install disc, I choose the picture of the Windows 7 CD from the desktop. The super-drive spins and then stops saying, "could not find installation disc." So I copied the .iso and all files to my iMac and burned a new disc using the super-drive, hoping that would resolve the issue. Went to bootcamp utility and the same thing happened. Also tried removing the partition, restarting, recreating the partition and tried the bootcamp utility again. To no avail, "could not find installation disc." Help?