I have a driver that my company has been using for a few years for our customers. The driver can no longer be installed under Vista 64. I believe I need to get the driver signed, but I am not sure how I can get started.
You start by reading all the stuff on the WindowsLogo site.
Although actually Vista 64 refuses to load unsigned drivers, not non-WHQL drivers, so imply purchasing a software signing certificate and signing the executables will be enough.