Our Hot Finds Editor says "I normally try to steer clear of system utility
tools such as registry cleaners, generic Windows clean-up suites and so on,
because in my experience they can do more harm than good. But this simple,
free program seems to work rather well, and it's easy to reverse any changes
because you can keep track of the selections you make. It's a 1 MB download,
runs on anything from Windows XP to 8, and is free." If you are a Vista or
Win7 user check out a second free tweaking utility suggested by user "travis"
in the comments. It is pretty impressive too.
http://www.techsupportalert.com/content/handy-tweaking-tool-windows.htm