I want to connect to the Internet through a LinksysWRT54GS router using ethernet cable. The router is plugged into an Alvarion IDU device which is connected to an antenna on the roof. The Internet connection is fixed wireless broadband.

When the PC's ethernet cable is plugged directly into the Alvarion device I am able to connect to the internet by using the Network Card Configuration dialog, saying “No� to using DHCP broadcast, entering the IP address, entering the subnet, accepting the default Broadcast address for eth0, entering the Default Gateway and entering the Nameservers. The network card is built into the ABIT NF8-V motherboard, chipset is nVidia nForce 3 250Gb single chip.

Once the PC is plugged into the Linksys router, the above configurations no longer work. I have tried saying “Yes� to the “Use DHCP broadcast?� question. I get: “Sending DHCP broadcast from device eth0� and then
“auto lo eth0�
Then the netcardconfig box disappears but neither Firefox nor Konqueror are able to find any webpages. They only get as far as “Looking up www.google.com�, for example, but they can't ever find the site. When my PC is plugged into the router, an led does light up but doesn't flicker.

A Windows XP user connected to the same Linksys router by ethernet uses the “Automatically detect settings� option in the Network Connections dialog box and that works fine for him but Knoppix doesn't seem to have such an option.

Help would be much appreciated, thanks.