I have some kind of infection that has taken over our internet browser. It is called SWP2009.com or Antivirus system pro. It pops up almost every 5 minutes or so saying spyware alert and asking me to activate antivirus system pro. It has just started to pop up telling me "application cannot be executed. The file wmiprvse.exe is infected." then asks me if i want to activate my antivirus software. About every 5 minutes my browser pops up on its own with some random form of adult website. I have run Spybot search and destroy, avast antivirus protection, and malwarebytes anti-malware and nothing has stopped it yet. How do i stop this?