If you can, tell us what happens during bootup with DHCP. It should say something like "attempting to configure eth0 by contacting a DHCP server." Next, the DHCP command is supposed to report back what it gets. If you never see the "attempting to configure eth0" message, rerun netconfig and make sure you selected DHCP. DHCP is the second choice, static IP is the first. DHCP only asks if you need to supply a hostname, and most of us don't. It mentions that Cox at home is an exception where you need to supply a hostname to DHCP. Like I said, the card is definitely functioning. Good luck