I'm running Windows Vista Ultimate x64 (SP1) on a 17" MacBook Pro with the latest Parallels 4.0 build. The MacBook has a GeForce 9600M GT graphics card that I would like to take advantage of in my Windows VM environment as I am using Autodesk's Revit 2010 (3d BIM modeling software). I try to install the graphics driver that I downloaded from Nvidia and it says that it cannot detect a 64-bit operating system in use. I check the VM and it says I am running a 64-bit version of Windows Vista. Anybody have any suggestions? Maybe a cluuuuuue?! (Sarcasm aside...any help is greatly appreciated Regards, George