IP Address assingment in Ubuntu 8.10

[hemantm]

I am trying to assign a static IP address to my Ubuntu 8.10 box.
On assignbing the address using Network Manager GUI, it takes up the new address only for the session.
After I logout and relogin or reboot the system, it automatically goes in for DHCP.

Please let me know what files need to be modified to the default behaviour to Static IP address instead of DHCP.

Thanks in Advance,
Hemant

[kr0nik]

try using network manager. open up and edit your auto eth connection and copy the mac address and then exit out of that edit tab and click add. paste the mac address, and in the ipv4 tab put in your ip you want. netmask, and gateay (gateway is your routers ip) then exit out of all of that. left click your network icon and click on that connection instead of auto eth0