Networking can be set up pretty easily from the command line.
vi /etc/network/interfaces
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.50
gateway 192.168.1.1
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
After entering in all of the networking information, you need to restart networking services using the following command:
sudo /etc/init.d/networking restart