Registry Mechanic 8

Reggie_Rebel

Eusing is the best registry cleaner I've found.

aliEnRIK

In case anyones reading this and not sure what a registry cleaner is. They clean unwanted (dead) registries that programs leave behind (Amongst other things)
SOME registry cleaners however could EASILY kill your system, should it delete something it shouldnt. On top of that, the difference it will make once 'cleaned' will almost certainly be undetectable (Unless theres a serious conflict somewhere)

So my personal advice is run CCLEANER, which is the safest I know (and even THAT can cause some problems at times). Run registry cleaners at your own risk.......