According to my Advanced Settings for my display, it's still using 1.5 GB of ram. I only have 3.5 GB in my system (total = 4GB, but I am running Vista 32-bit). Does this mean that my PC is acting as if it only has 2GB of ram? I did what Atomic said and used the device manager to uninstall my previous display driver, but it seems as though the machine is still trying to used shared memory to enhance the card.