[PLUG] How to get a Tata Indicom Broadband connection working in Ubuntu 7.04

[pgiresident pgi]

Hi all,
This is Santam Chakraborty from Chandigarh. I have installed ubuntu 7.04 on
my system ( dual booting with Win XP. I have a Tata Indicom Broadband
connection using a ADSL router from Billion (BIPAC 5200 S). I have a
permanent IP address. I tried to connect to the net using the networking
program where I selected the option of static IP and then typed the IP
address / Subnet / Gateway and also typed in the preferred DNS servers -
however an internet connection didnot materialize. I then tried to see if I
could use the ADSL connection method in the help file using "sudo pppoeconf"
method. This also failed. I have also tried using DHCP as an option in the
networking program but that also failed to work.
I have used the same router based connection in freespire after just typing
in the static IP/Subnet/Gateway and preferred DNS addresses provided to me
by the ISP with minimal hassles. So I am pretty sure that I can use this
connection in Ubuntu.
I would be obliged if someone can give me the step by step method to get my
net up and running as it is the only thing preventing me from moving over to
Linux completely.
Thanks
Santam Chakraborty