How about just don't turn it on?
That should stop the problem.
<vbg>
Ok, seriously, you need to purchase an anti-virus program.
Install it, update it, and then run a full system scan to clear out the junk.
Then wash your hands thoroughly.
These two sites also have free on-line scanners as well.
Good luck.
BTW, this newsgroup deals with the database program called Microsoft Access.
You'll have better luck posting this question to:
microsoft.public.security.virus