I have a XP laptop that I can connect to the WAN and LAN with no issues. I can ping the router and can connect to all my other computer in the network. All other computers on the network WAN or LAN have no issues and can connect to the internet just fine.
I have tried Microsoft's Winsock repair tool but that did not work. I have also tried to reinstall the WAN and LAN devices with no luck.
Both WAN and LAN are setup for auto ip and ipconfig /all shows all the correct information.
I also have a Verizon wireless card that I can plug in and connect to the internet just fine.