Quote: "however this might be your problem:
Quote: "I got a free piece of software called Wise Registry Cleaner""
Not sure that would be the problem, because I have that program too, and never had any problems with it. The only difference is, that I'm running Vista. So, maybe it has something to do with the compatability of both running together? Do you have the latest version of Wise Registry Cleaner, and is it suited for Windows 7?
I also have Advanced SystemCare (the free version), and I must admit that it is a really good program. It cleans your registry better, looks for spam and adware, malware, speeds up your computer, defrags it, etc...

Maybe you should try it out sometime?
Have you tried to go back to before you installed WRC with the system restore function?
And, in WRC there should be a function to undo, did you try that too?
Cheers
Slayer rules!!! Yeaaah, man!