Ok well I think I got it. I disabled DHCP on the Linksys, and assigned it an IP that was within the subnet of the Actiontec but far enough away from the ip of the modem that it would never attempt to assign something else the same ip. And in order for the wireless to work right, I had to change the baud rate to 50 rather than 100. I have no idea why but it works great now and I'm excited. So yeah.
Really glad you got this running but based on your description I'm not sure how. I have three wireless routers in my house. 1 main upstairs and the two others downstairs. Why the two others, well, it's complicated but lets just say it was a home builder error.
The two downstairs communicate with the main upstairs router. Any network peripheral that I connect either wired or wireless can obtain an IP address flawlessly from the main router DHCP table. The wireless is secure using a 64-Bit WEP Key so I am protected no matter which router I connect through.
bigjp64 is on the right path but a little off. You only have to enable bridging on the main router not all. You don't really have to set any other routers you ad as Access Points, that can get tricky. You would only do that if you want to comm across great distance and "hop" through Access Points to reach your network. Although technically correct, it is not necessary in a home environment. Just need a little old school network know-how. Have your eyeballs rolled into the back of your head yet?
BTW, what the hell is a baud rate on a router? I've worked with commercial CISCO routers to janky home routers and never heard of a baud rate on either. Baud rates are for old school phone modems. splain Lucy....
If you want a little more detail on how I put together my network let me know...It's really much easier than folks think. However, some routers just don't like to play with each other nicely so it could end up a troubleshooting nightmare but fun to learn.
my two cents...