Good free search program that will search the registry as well as files and folders?

I hate Windows Search 4.0, and I have disabled it.

I have found a couple of really good user-friendly free search programs in MasterSeeker and SwiftSearch. But I would like something that searches the registry as well as folders and files. I have a particular interest in thoroughly getting rid of unwanted programs that don't show up on applications like Revo Uninstaller.

Any suggestions?

Windows XP
Home Edition
Version 2002
32-bit
Service Pack 3

Dell DIMENSION DIM2400
Intel(R)
Pentium(R) 4 CPU 2.66GHz
2.66 Ghz. 2.00 GB of RAM
Hard Drive Size 111.72 GB
Free Space 30.0 GB