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.

See these links for two possible AV programs:
http://us.mcafee.com/root/package.asp?pkgid=100&cid=9901
http://www.symantec.com/nav/nav_9xnt/

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