November 15, 2006 - On x64-based versions of Windows Vista NDIS protocol
drivers simply will not be loaded unless they are digitally signed.
Fortunately, signing NDIS protocol drivers is the simplest of all Vista
driver signing tasks.
I have put together a short article describes how to self-sign NDIS protocol
drivers for Windows Vista. The information in this article can be used to
sign the Rawether V5.5.18.04 x64 drivers so they can be loaded on Windows
Vista.
http://www.rawether.net/support/KB11150601.htm
Thomas F. Divine