Shoutbox

Yeah reformating it would work.... And you wouldnt loose any files, but still, you shouldnt have to.

By any chance have you tried to install a Windows Theme program? Because if any of them try to modify your SP1 theme files it sorta goes haywire.....

And as well it sounds like you MAY have a virus or some spyware.

So try booting up in safemode with networking(Hold down F8 While starting computer). And then seeing if the internet works then, if it doesnt, you can accsess your router by typing in "10.1.1.1" into your browser. And scan for virus's/spyware with your spyware/virus software in safemode. Because some nasty malware can sort of hide themselves.....