Open a console and post back the result of ifconfig > ifconfig.txt, as well as iwconfig > iwconfig.txt (if you're using wireless). Assuming you were able to connect to the network before and then lost it on reboot, you may have to use the command
Code:
ifup eth0
to bring it back up. Netcardconfig only sets the settings using ifconfig and iwconfig, respectively, and puts its results in /etc/network/interfaces and /etc/resolv.conf but that's not a guarantee that it will bring it up. If you didn't put in a gateway ip address, then that's probably why you can't pull an ip address, as you need to point the NT server as the gateway from which you'll be drawing an ip address from. The command to add that would be
Code:
route add gateway (NT server ip address)
Replace (NT server ip address) with it's ip address which should be something like 192.168.0.1, you get the idea.

HTH,

Durand