zeogold: There is no way in heck I'm clicking that link.
I'll describe the contents of the page linked to.
The page describes (and even contains the text of) a test virus (known as the EICAR standard antivirus test file). The actual file mentioned is not actually a virus; it just displays a message when run as a DOS program. However, every major antivirus program is programmed to treat it as if it were a virus; if you have antivirus software running and you download or create the file, the antivirus software will detect it and treat it as a virus, possibly quarantining or deleting it.
Incidentally, one use of the test file is to verify that your antivirus is installed and running.