Try this,

http://www.majorgeeks.com/download4134.html

or this

http://www.majorgeeks.com/download414.html

These programmes work ok and make backups of deleted files just in case you may need them again, but I would make a full backup before letting any Reg Cleaner do its job.

Backup Prog:

http://www.majorgeeks.com/download2746.html

MajorGeeks is a good site for all kinds of stuff, so have a look around for any other useful freeware.