What is RegistryBooster?

RegistryBooster is the easy answer to Windows registry problems. This award winning software will deep scan your registry to identify problems and errors that can cause instability and slowdown.

RegistryBooster improves your PC by optimizing your registry in two distinct ways. After scanning for obsolete and harmful entries, RegistryBooster will clean and fix your registry, removing errors and improving your computer's processing efficiency. RegistryBooster can also defragment your registry by re-ordering instructions for contiguity. With a clean and defragmented registry, your computer can speed along at peak efficiency, with fewer errors and better performance.  

You can find more information over here:

http://www.uniblue.com/software/registrybooster/howitworks/