do you use dhcp? if not, you must set a static ip address.
if you use 192.168.0.0 type network,
then type ifconfig eth0 192.168.0.1
then type ifconfig eth0 up
then type ifconfig
you should see your eth0 information
then edit the /etc/resolv.conf
and put your nameserver info on separate lines
nameserver 63.169.120.10
nameserver 204.127.198.4
then try pinging 204.127.202.4
type ping 204.127.202.4
if you get ping response, then you are in business. you may have to restart the network to get the new nameserver info from the files to your network. may also need to restart xinetd. not sure. anyway to do this type service network restart, then type service xinetd restart.
if tries to get address and fails do the first two steps above, the ifconfig ones.
then you should be able to ping by name, so type ping
www.google.com
if this works, then you are in business.
i think this may work. if you are using dhcp, and the card just isn't getting an ip, then something else is wrong. hope this helps. if so, then you need to edit your network settings, or the associated files, which i can tell you if you didn't install the gui for network configuring.