Just in case anyone is having the same problem. I've had problems getting an internet connection for the last 2 days, computer tells me I have an internet connection, but couldn't get any pages to come up. Anyway to cut a long story short, microsoft XP automatically updated and the update is incompatible with ZoneAlarm. To sort it, you have to uninstall ZoneAlarm, then go to http://www.zonealarm.com
and re-install it. Hope this helps someone!