did any of those places look like where you made the first changes at?

If you can recall what specific area you were in at the first size change I can start there and try to help figure it out.

I'm not sure if a system restore to before the fonts size were changed will make them go back to normal...

It might be worth a try to do a system restore if you can recall the date before the font size was changed.


Are the icons and everything big or only fonts?

If everything is big maybe you changed the resolution of the screen?
http://www.microsoft.com/resources/d....mspx?mfr=true