IE problems Connecting

I have a client system on a broadband connection in a peer to peer set up. This systems runs Win98. IE 6. There are not DNS settings, IP addresses or gateways listed in the Network properties. This is true of all the systems on the network (five total) all were able to connect to the internet, this one completely stopped connecting to the internet last week. It sees all network systems and can file share but gets the standard page cannot be displayed error when running IE. Any Ideas what it could be????