As you say, getting the virus is the first problem, trying to find a genuine program that will get rid of it (and not just give you ANOTHER virus) is the second problem.
While I have not tried it, it seems the product Malwarebytes' Anti-Malware will do the trick.
You can read more here
http://www.bleepingcomputer.com/malware-remova l/uninstall-antivirus-2009
(As i say, not used it myself so you use at your own risk. It may be worth waiting till others have replied to see if there is a solution most people suggest)