http://members.home.nl/edeijl/index1.htm
Download section and than the registry cleaner.
It is small, fast, easy to use.

Although not supported officially by Microsoft, it is created by their programmers !
And they are the ones who should know ‘everything’ about the registry.

If you visit my website, I suggest also to get the ‘Windows registry manual/tutorial’.
Very interesting and most (all?) people can learn from it when it comes to the registry.