Do you have static IP address at your provider? How did you configure your net card? Try with DHCP or static. You have to setup both pppoe and net card. You are on some local net or cable maybe (no modem)?

Edit: one more thing - how did you put your user name in pppoeconf - I must put [user_name]at[my_provider_domain_name] = tdjokicatverat.net, here at = @.