From my university (Indiana State University) I have the option to download Windows 7 Enterprise 32 bit. Kind of weird if you ask me, considering the last available download from the school was Windows Vista Ultimate 32 bit. I have 24 GB of ram in my Mac Pro, and of course x86 only supports 2.98 of usable ram. My question; Is there anyway possible to install Win 7 Enterprise 64 using a product id or product key from the 32 bit? I read somewhere where they could install the 32 bit just fine from the 64 bit disc, however I didn't find anything about the other way around.