Connecting at&t dsl to wireless router Cisco Linksys E2100L

[kc4mix]

I'm not on it now but when I connect via the "new" router the internet isn't found. What is the next step?

 

[Emerald]

i would ask AT&T to help change the modem to bridge mode and ask them for the user name and password for the account.

then configure your router's WAN to PPPoE and enter the account info. Also make sure you change the setting to stay connected. The default should be connect on demand.