Finally internet is working!!!I am posting this from knoppix.

I used the rp-pppoe-3.5 program to set up the adsl connection. However it still didnt work. By searching through the rp-pppoe forum, I found a solution.
I had to change the default route by:
Code:
# route del default
#route add default gw your_isp_ip
After doing this it works fine.
I feel if I had just connected using the knoppix pppoe connection utillity, and changed the default route it would also work.

Thanks for ur replies.