Now I am trying to set up this new router the same way. I read somewhere that the fourth port on this one also acts as uplink and so I plugged the cord into there. I can pick up the wireless on my laptop and connect to the router. I can change settings and stuff from here fine but no Internet. Here's the kicker though, if I run an ethernet cord to the laptop from one of the ports on the router I get internet, only it's really slow. I have DHCP disabled on the wrt54g and enabled on the speedstream dsl modem. I also have it set to act as a router versus a gateway.
If anyone knows how to make the wireless work that would be very helpful.