That link really helped me out. Essentially you just follow through this example:
Edit the /etc/network/interfaces file. The same configurations that you would have written to resolv.conf can now be in the same file as your network adapter configurations like the example below:
# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 192.168.1.2 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.1.255 gateway 192.168.1.1 dns-nameservers 126.96.36.199, 188.8.131.52 dns-search local dns-domain local.domain
I found this sample very handy in setting up a 12.04 Server instance. So many posts are about the network manager, but that isn’t available with out installing many other packages, etc.