My computer has been taken over by an Anti Virus Program. I have McAfee Antivirus Plus 2010 installed but does not detect anything wrong after three scans. I can't open any files or programs after startup and no internet connection. This Antivirsue takes over in Demo Form and mandates a purchase.. It states this demo version of antivirus live, please note the removal is disabled in dempo mode. To be able to remove please purchase mimium three month $59.95. I can not find this program in any file including cookies not can I remove the program . I am running MS XP on a Dell Vostra. ANY SUGGESTIONS?