Tomatoe RAF & a Bonded Modem?

I have a bonded DSL Modem, and a E3000 running Tomato RAF Firmware v1.28.9013 MIPSR2-RAF-V1.2x K26 USB?
I would like to put the modem into to the bridged mode, and let the router do the login.
The Modem is a Comtrend NL-3100u.
Here is a pic of the Wide Area Network (WAN) Service Setup page.