I have a problem connecting to the internet with a windows 7 computer. It is on a LAN and can communicate with other computers on the network. It can ping it's default gateway, which is an adsl router.
However when I ping google.com from the computer, it gets the following reply from it's gateway: "Destination net unreachable". This tells me it is indeed trying to use it's default gateway. The same problem occurs with all windows 7 computers on the network.
Networking on the LAN works just fine as the windows 7 computers can print over the network.
A windows XP machine on the network can connect to the internet via the router just fine.