Yep that's a pain in the ass, Ive fixed a few pcs that were infected with this program claiming you have multiple viruses and to activate their software. I Killed it with Malwarebytes or any good antivirus should do it. Just uninstalling the program wont work as you probably would know as it heads to its home page asking you to buy it first. You have to buy it to uninstall it? That just there should tell any pc user the program is a piece of sh*t.
install free version update it then run a scan
http://www.malwarebytes.org/
Beware of Scareware programs
http://www.networkworld.com/news/201...st-costly.html