DSL to Router Help

[BarTopDancer]

I got hooked up with ATT's dry DSL. No landline required!

So I am trying to get my network up and running with it.

Here is what I have so far:

wall > modem > computer = success
wall > modem > router > computer = fail

I need to enter my user name and password created for the modem but she couldn't tell me where. I found some settings called PPPoe which allowed a user name and password to be entered - but it still didn't work.

I was doing some research on Google for the hook-ups and Wikipedia (thanks Andrew!) on PPPoe. Then my brain melted.

Anyone have IT-idiot proof suggestions?
Linksys wireless router
Motorola ATT DSL Modem.

thank you!