registry cleaner

numba23-
Before you ever use a registry cleaner you should make a backup of your registry. All registry cleaners should come with an option to save your current registry settings. It is rare that there is an overkill that will take place, but it has been known to happen. With a backup of your registry you may restore the original.

http://www.registrycleanercompared.com/2/index.html?gclid=CML4iKvM5pICFUIlFQodBTLa3w