Are there any good free registry cleaners that actually remove the problems their scans find?

I have already installed other cleaners like "Registry Optimizer", "Regseeker", and "Registry Bot" so far they all find different problems and don’t seem to fix or remove any of them. My OS is windows 98 and my computer is a Compaq and it is a little on the older and slower side. Any and all help would really be appreciated.

There are some comparison and review of
TOP 5 registry cleaners.

http://www.registry-Cleaners.info

You can download and scan your PC for free.