What firewall do you have, Ian? I only ask, because some of them have a setting, whereby simply disabling the firewall, while running, will block all internet connections by default, as a security measure. Sygate does this. To completely eradicate the firewall from blame, try going into it's options, disabling it from starting with Windows, then reboot. If you can then access the web, it will prove whether your firewall is blocking, or not.