You can't use unsigned drivers on Vista x64, but you can use self-signed drivers, so all you have to do is sign them, no need to
press F8 during boot any longer. I ripped the necessary utilities from MS SDK and created my own certificates for my tv tuner, the
programme Netlimiter x64 etc, and all of them work. You have to enable the TESTSIGNING mode in the vista boot loader through bcdedit
and install the certificate into the Trusted Root Certification Authorities store. Afterwards all drivers will load (reboot first).
The necessary utils and the instruction can be downloaded here:
(right-click->save or paste into download manager)
here's a snapshot:
An instruction in English is included in the package, don't worry.
3 patched drivers are included. You can use them, but don't forget to install the certificate into the above mentioned store. Or
just create your own certificates using your own (nick)name