You may need to run an antivirus software immediately. If you want to remove the virus yourself, you can read the article bellow to learn some good methods on dealing with computer virus:
http://ezinearticles.com/?Computer-Virus-Removal---How-to-Remove-Computer-Virus-Manually-and-Automatically&id=3458652
Good luck to you!
Muriel William
December 2009
You should use your anti-virus software. Ask it to check your USB stick just like any other drive.
If you don't have anti-virus software (and you should) search for Avast. It is about the best free anti-virus software available. AVG Free is also an option.
Henry
December 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix virus removal.