Here is the answer to making a Embarq 660 modem DSL work with a Cisco router. Non Bridge Mode. For the record I searched, asked, an emailed embarq and looked extensivly on forumns and no one helped me. It was really aggrevating. My explanation assums you can get your interfaces up and up on your own.
The problem is your LAN interface knows how to get to the Modem but the modem does not know a route back. What you have to do is log into the 660 modem and enable rip version 2. Then go back to your router and do the same thing. Redistribute rip and it will work.
I am going to do it with the modem in bridge mode next so someone can give me that info here or ill do it the hard way and post it myself.