This is a well-known virus, one of the Klez variety. Download the antitoxin program from your antivirus provider.
On second thoughts, change your antivirus provider because if your antivirus program didn't pick up on this one you are way out of date!
Sorry to be so unhelpful. (I think that most reputable antivirus providers will let you download an antitoxin for the Klez viruses for free - I think, but I'm not sure.)
E, you need to have an antivirus that updates regularly: mine has sent me updates three times in the last 24 hours!