Is that network card connected to your DSL modem or an internal network? If it's connected to the modem, is your ISP assigning you a static or dynamic IP? If it's a static IP you should assign it the IP your ISP gives you, along with all the other configurations. You should not put anything if it's a dynamic IP.
If the NIC is connected to your internal network, you should assign 192.168.0.x (where x is any number) for IP, and 255.255.255.0 for submask for your internal network to work.