I spoke with Apple Customer Service and we must have crossed wires. He told me I needed OS X Snow in order for my iMac to run Windows 7 in the 64 bit version. He had the serial number from my iMac. Here are the stats Intel Core 2 Duo 2.8 GHZ Processor # of Processors = 1 Cores =2 l2 cache 6MB Memory 2gb bus speed 1.07 This was AFTER i partitioned the HD with Boot Camp 50/50 mac/win Win 7 64 bit install went fine after I loaded OS Snow. When I tried to install the 64 bit drivers from the DVD it said my computer was not supported for 64 bit. I've seen conflicting info. Can you point me to the proper answer?