So - - it really *wasn't* "trying to stop [you] from even posting this question" after all? Hmmm.
"find out is if there are any traces of the virus Net-Worm.Win32.Theals.B left in my registry"
Well, I'm not sure where you're going with this, but if you're scanning 'clean', that's the main thing. If there are 'traces' they are likely of no consequence, since you don't seem to be reporting any "file missing" errors, other than the WUWeb error you allude to.
If you are concerned, you may perform a registry search and see what comes up - Regseeker may prove useful for that, but caution is the watchword when tinkering (although that app creates backups, just in case)
"the file WUWeb Control class is damaged by what the computer tells me"
It would be best if you could relate the exact error message
I'm not one of those who think Bill Gates is the devil. I simply suspect that if Microsoft ever met up with the devil, it wouldn't need an interpreter.