Try entering 192.168.15.1 to enter the linksys router, as instructed here
I've stumbled across a forum discussion
that I think is similar to your problem. One of them suggested:
You need to bridge your DSL modem. I am guessing that it does PPPoe and acts a NAT router since you said it is on the same subnet 192.168.2.0. Most DSL routers that the bells put out these days behave that way by default. You have to turn that behavior off so that it just becomes a pure modem. Then let your linksys box do the PPPoe authentication, NAT, DHCP, and routing. Call your provider to find out how to put your DSL modem into bridge mode. It's never going to work the way you want the way you have it configured.
The OP solved it with this:
All I had to do was specify DNS settings in WRT and woooo....works fine. I also connected LAN DSL to WAN WRT.
Edited by ditrackster, 15 May 2008 - 06:48 PM.