I'm trying to install an Nvidia GPU driver on my 64 bit vista, but it's not working. I DID click on the 64 bit download and not the 32, and I AM sure my vista is 64, but the install setup doesn't recognize my computer as compatible. I keep getting the message: "The NVIDIA program could not locate any drivers that are compatible with your current hardware. Setup will now exit"What's going on? How do I make this work?