Ad stuck on desktop?

Not sure how my boss's laptop got this stuck onto it, but anyway -

On his desktop is some text, behind all the icons. The text says "your machine is infected with spyware" or something like that, and under it is a link to a website with anti-virus software for sale.

I moved all the icons out of the way but I can't remove this text and link from the desktop, it won't drag into the recycle bin, and right clicking doesn't give an option to delete. It's not on the "add/remove programs" list, so I don't know what to do next.

Any help would be gratefully accepted! I've run the Norton Antivirus scan, but that didn't do anything . . . . .

Ad stuck on desktop?network security

That is spyware (sounds like SmitFraud or Vundo). Here is some directions with links for programs to help:

Virus/Spyware Removal Instructions:

Download, install, and update antivirus and antispyware programs (found below). Turn off System Restore off (Right click My Computer, to Properties, go the Restore tab, check the box to Disable system restore). Reboot into Safe Mode (pressing F8 on power up). Run the installed antivirus/spyware. After you have verified they are removed turn System Restore on (uncheck the box) and make sure all of your Windows Updates are completed.

Ad-Aware

http://www.download.com/Ad-Aware-2007/30...