Have you tried System restore? This might help you a bit. If that won't help your, then open Windows explorer, go to the "My Computer" then "Documents Settings" directory, and unhide the Applications folder. Now you will see a folder with the 16635345 (or any numeric type of folder). It can't be removed, but you can move the folder to a diferent folder other than the Documents Settings. After that, Reboot your PC. The virus won't find that folder after you reboot your computer and won't get loaded up. Now you should be able to download System Security 2009 removal tool from here:
http://www.2-spyware.com/remove-system-security-2009.html