Protocols / Routing :: Cisco E2000 Has No Internet Connection

We have Linkline ADSL that was set up by them with a Netopia 2241N-006 modem and a Cisco 33674 wired router. We got a Cisco E2000 wireless router to replace the wired one. It sets up perfectly, in that I can see and connect to the wireless router just fine, but it has no Internet connection. Also, when we plug the cord straight from the modem into the computer (as was suggested by someone) it has no Internet connection, so it seems we need the Netopia modem for it work.I have connected to Cisco live chat three different times to try and find out how to make this work, and each time after making me give them all the information they insisted the uninstalling/reinstalling Cisco connect and then going through set up again it would work. On the second and third chats I even gave them the reference numbers for the previous chats so theiy could see that is what was already done, to no avail. Apparently that is the only solution they know.Then I called Cisco support on the phone (twice). The first time they insisted I hang up and I repeat the same procedure from the chats, even though I explained I had now done it three times and gave them the chat reference numbers. They said if I would not do that. The second time I called they told me that was not something they supported - using their router with an adsl modem - even though their instructions do cover it.

using the two routers together since I cannot get the wireless one to work alone. I went and bought a crossover cable, hooked the two routers LAN port to LAN port, changed the router's IP address to just outside the main router's range and disabled DHCP. This did not change anything, so I tried the one other idea I found online which was to assign the router a static IP address in the same range that the rest of the network is using, hook the two routers LAN port to LAN port with the crossover cable, and disable the DHCP. This did not work either.