The Windows Club has quite a collection of freeware utilities: http://www.thewindowsclub.com/list-freeware-releases-from-the-windows-club
This one, in particular, might be a good general purpose tool for solving a variety of problems...
Ultimate Windows Tweaker
TweakUi on steroids. The Ultimate Tweaker for Win 7 and Vista from the Windows Club. Sorry if this has been mentioned before, but if so it's worth mentioning again. Just put Ultimate Tweaker for Win 7 in Google to find the site.