Router Security Troubles

[IkklThePickle]

For a long time now, my home's wireless network has been "protected" only by a WEP key. This was because certain members of the household wanted to be able to use the wifi for their Nintendo systems which would only accept WEP security. Now that this phase is passed, I want very much to switch to something that is actually secure. Unfortunately, I have lost the cd to our Linksys WRT5G that would expedite the process. I have also tried to access the router UI through a browser, but instead I am directed to that of the Westell 6100 modem. I have absolutely no clue how to view the router instead or if I even can.
Your help is appreciated.

 

[eibgrad]

1. Disconnect the router from the modem.

2. Do a factory reset on the router (hold the reset button for 30 secs while powered ON, then release).

3. Connect a PC via wire to the router and bring up its UI @ http://192.168.1.1

4. If the 6100 modem is actually a modem+router (which I suspect it is), then it probably conflicts w/ your router (e.g., they may both be using the 192.168.1.x network). If this is the case, then change the LAN IP of the router to 192.168.2.1, save it, and reboot it. Connect back to the router UI @ http://192.168.2.1

5. Now add your wireless information (SSID, WPA2, AES, key, etc.), save it, and reboot.

6. Using a wireless connection, make sure you can now reach the router’s UI over the SSID and w/ the new security information.

7. Finally connect the router back to the 6100 modem(+router) and verify you can access the internet as well.

If the 6100 is a modem+router, it might also be possible to place it in bridge mode, which would demote it to only a modem. And that would remove the double NAT due to the two routers. It would simplify firewall management too. But for now, I would just follow the steps above to keep it simple.

 

[IkklThePickle]

Best answer selected by IkklThePickle.
n
nI realized my mistake. The problem wasn't that I failed to disconnect the modem before the factory reset, it was that I wasn't disconnecting the computer. Without disconnecting the cat5 cable leading to the computer, trying to access the router IP address only gave me a "Server is taking too long to respond" message. Yanked it out, stuck it in port 2, and eureka.
nIP changed, wireless network secured. Thanks a lot.