Recently, Windows Firewall has been set to "OFF". The buttons are grey and I can not select "ON" in Control Panel. At the top of the Control Panel window is a box that says: "For your security, some settings are controlled by group policy" All that I have read about group policy relates to networks. This is a stand alone PC. I am running Windows XP, with the latest updates. I have SBC Yahoo DSL, if that matters. I can not find out how to turn on the firewall or get to "group policy" to change settings. Any ideas?????