Man oh man.
The Ultimate Boot CD for Windows is the best f*cking tool for Windows, ever. If you're a Windows admin (or you're a tinkerer), do yourself a favor and grab a copy. It just saved my ass again, when I tried to change the video drivers on our NT4 fileserver. Change drivers, file server no longer boots. Swap the video card. File server still doesn't boot. Try "safe mode" and "last known good configuration". File server still doesn't boot. Use UBCD4WIN, remove the bits of the errant video driver. File server boots. Gary keeps his job (for now).