Setup BSNL Broadband in Ubuntu 9.04

Enter the command in terminal pppoeconf.
Use the tab key to shift options in the terminal, it will ask for ur id password, enter and it will dial the pppoe automatically everytime you boot the pc.
Enabling pppoe inside the modem itself is a good option, however I have observed that the firmware in my modem is not very reliable in case the connection drops, so I prefer pppoe on the computer rather than pppoe of modem.