Hi everyone, I have a Mac Pro (1,1) on which I'm running Snow Leopard and Windows 7 Pro in boot camp. I recently upgraded my Mac to 10GB of RAM, and have noticed when I boot into Windows (currently the 32-bit version), it's telling me I have 1.99GB usable. I figure this is requiring me to install the 64-bit version. This is where I'm stuck. If I try to run the BootCamp64 installer off of the Snow Leopard disk, I get a message saying "This installation package is not supported by this processor type. Contact your product vendor". If I put in the W7 64-bit disc and run setup, I get a message that says "This installation disc isn't compatible with your version of Windows. To upgrade, you need the correct installation disc." Also, when I run the Windows 7 Upgrade Advisor, it tells me (under the 64-bit tab) that my Apple memory controller GPE event is not compatible. I'm not sure if the problem stems from the steps I took to get Windows 7 on in the first place. I was running XP home on Boot Camp and bought W7 Pro upgrade. I changed my Boot Camp drive to NTFS and expanded it from 15GB of space to 50. Then I booted into XP, put in the W7 disc, and installed (I was still running Leopard at the time). Am I missing a step? Is my process of installation to blame? I'm not quite sure what to do at this point. I'm grateful for any help.