In the terminal (console) as root type pppoe-setup
Answer the questions and you should be good to go.
So what's my problem? I called my provider (verizon), got the IP address (255.255.255) ran it through pppoe-setup, then ran pppoe-start, got a message saying I was connected... but I wasn't. What gives?
Could the verizon guy have given me the wrong info. He seemed to have actually never heard of Linux. I kept telling him I was using Linux, and he kept asking me if Iwas using XP or Vista? Watta maroon!