Does anyone know a good free Registry Cleaner. IE Spybot is a great free spyware killer and A-squared is a great free malware killer. I dont want some advertisement filled registry cleaner.

http://www.cnet.com.au/downloads/0,239030384,10434887s,00.htm

give that a shot, no adds from what i can tell and its free

I use regscrubXP. Goodlge it. good stuff.