help needed for Ubuntu 8.04 on HP 6720s notebook

[Abhishek Bawkar]

Hi James/Mario,

Extemely sorry for the late reply, I was out of station for a couple
of days.....here are the contents of my system's
/etc/network/interfaces

auto lo
iface lo inet loopback


iface eth0 inet static
address 100.100.102.192
netmask 255.255.255.0
gateway 100.100.100.1

auto eth0

Also, attached is the file created in my home directory by:
sudo lspci -vvnn > lspci-vvnn.log

Mario, here are my answers to your questions,

Can you ping 127.0.0.1? Yes
Can you ping your own IP that you received from the ISP? Yes
Can you ping the ISP's gateway? No
Can you ping the DNS servers? No

Mario, also note that, answers to all the above questions are YES,
when tried in windows.

Please let me know what's next to be done.

Thanks a lot for your suggestions.

Regards,

Abhishek