Yes a idea try using AVG Anti Virus Works quit well.You might have a nother worm that is doing it avg is the only thing that i no of that well get rid of it.
Here is a link.This is full version of avg.
AVG Anti-Virus Free Edition - Reviews and free AVG Anti-Virus Free Edition downloads at Download.com
Note:Make sure you update Fully be four use.
Good Luck....
Chris B........