Sorry to be the messenger of bad news, but you've got a
virus. We had too users arrive at the technical support
office today asking us to sort their laptops out.
Go to:
http://vil.nai.com/vil/stinger/
Download the stinger.exe
Also, go to the microsoft site and download the patches.
There is a security link from the homepage of
www.microsoft.com
Run the stinger (whilst disconnected from the
internet!). Install the patch(es).
Your PC should then be ok.
Cheers, hope it helps.
Dan