I'm using a HP pavilion with a 1.8Ghz P4 and 512 MB of ram. When I first started using It, it flew along, but now, about a year later, as I've added and deleted many junk programs, It's going very slow. I heard it could be because my registry could be cluttered full of junk. I did a full restore on another pc in this condition, and it seemed to fix it. I don't really want to do that on my current machine because I recently upgraded xp home to pro and i don't want to reinstall it. My question is, is there anyway to clean up the registry without restoring the PC? Thank you.