Interesting follow though on what happens when you purchase a rogue AV (not recommended to do of course!)
http://sunbeltblog.blogspot.com/2010/04/exploration-of-rogue-av-customer.html
Astounding, unbelievable but true, gotta say these sorts of scams disgust me, if only one could get hold of the B^(*^*$&$ by the neck and......
Once the rogue AV program is installed, the victim has to pay money to get it "working" or, in some cases to even uninstall it.