Stop right there!
Do not pay out any money!!
You are the victim of a scam.
I’m going to give you some links to some free programs.
I want you to run all these programs- if you do so, your problem will be gone without you paying a penny.
Download these two tools, but don’t run yet:
http://www.malwarebytes.org/rogueremover.php
http://siri.urz.free.fr/Fix/SmitfraudFix_En.php
Download any of these scanners you don’t already have, install and update, but don’t run yet:
AVG Anti-Spyware: (Requires Win2000/XP)
http://www.ewido.net/en/
Spybot Search & Destroy:
http://www.safer-networking.org/
a-Squared:
http://www.emsisoft.com/en/software/free/
Ad-Aware:
http://www.download.com/3000-2144-10045910.html
Go offline (pull the plug on your internet connection) and run RogueRemover and SmitFraudFix followed by the other scanners.
When you finish, make sure your Firewall is up before you come on line again.
Please post a HijackThis! log if you still have any problems:
http://www.bleepingcomputer.com/tutorials/tutorial42.html