Actually, it is easy. You should use the right security program to remove it! My friends also met with this problem and he recommended to use Spyware Cease or you can visit http://ezinearticles.com/?Worm.Autorun---How-to-Get-Rid-of-It&id=2983462 or http://www.spywarecease.com/
Good Luck!
Troy
November 2009