New PC (dell) running windows 7, virgin broadband modem (cisco), and linksys g wireless router (model wrt54g). Have managed to set-up e-mail and internet sites, but PC insists it is not connected to internet, which means it won't access internet to get updtaes for windows or any other programmes. I think th issue may be with firewall, but can't seem to disable windows firewall. Anyone know how to do this, or know of any other problem that might be causing the problem.