Unfortunately, the rants about WGA causing a bluescreen are true. It happened a little while ago on my home PC. Thankfully, F8 booting into safemode still works, and I was able to restore my system to a daily checkpoint. Boy am I glad that was setup. Installing .net 1.1 sp1 worked fine, as did an audio driver I was missing.
After having to rollback to a system restore checkpoint.
Way to go, guys.