Can't istall Nero (virus)

[WinDIES]

Originally had a problem that Nero would only want to write to image, not disk. Tried the ugrade. (About the same time had gotten a worm which I removed).
Unistalled Nero to fix the "write to image" problem, then tried to reinstall. Won't install, it says I have a virus.
Have run 3 different Virus programs, all say no viruses.
Anyone come across this?
Found a link here one time to a Nero forum (English I think), which I can't find using Search.
Would Nero support be any use?

BTW I like using Nero to burn data, in case the comment "Ditch that crap" comes to mind. (It's about the only thing I think it's really good at).
PS BTW Have gotten all my burning knowledge from this site, good one guys.