I am a happy user of Parallels Desktop, which, for those that don’t keep up with this sort of thing, is virtual machine software for Mac. It’s a great product overall, although it has a few rough edges.
One of the rougher edges is the fact that their drivers are unsigned. I suspect they’re probably doing some unsignable things, but for Vista, there’s still a partial solution: Authenticode signing.
I’ve covered signing on this blog in the recent past, so I won’t re-hash the technical details again. But from the perspective of an end-user, I hate clicking all of those blood-red boxes. I even missed a click once and had to figure out how to fix it manually.
Authenticode doesn’t do much for downlevel platforms, but it can make a big, positive difference to end users on Vista and beyond.