nmRegScrubPro is an advanced registry cleaner/viewer/editor/defragger program for novices and professionals alike.
It is fast and efficient at cleaning and searching the registry for unwanted entries. It fully supports total automation as well.
RegistryBooster 2009 keeps your Windows Registry squeaky clean view it
In order to edit the Registry you need to use the Registry Editor. view it
Safety tips for using the Windows Registry editor view it
How to get started with editing the Windows Registry view it
If your Registry editing goes awry, you can always restore from a back-up. view it
Welcome to the wild and wooly world of the Windows registry view it
Here's an intro to Registry Mechanic by PC Tools! view it