Here's a quick test to see how good your antivirus software is. Don't worry, this won't cause any damage to your PC, because theres no real payload. (Disclaimer: But if it does it's not my fault, seriously I know 100s of peeps who have tried it with no problems).
All you have to do is past this line into a .txt file and try to save it:
This should make your antivirus kick in and get rid of it.