The server IP will show when it is listed by the Activision Master Server. It will be listed by Name (whatever you decide to call your server), and the IP address will be shown at the side of it in programs like All Seeing Eye and XFire. These are known as server clients - they find servers for you. If you don't name your server, COD will name it for you to: COD 1.5. Not very attractive is it? So, best name your server, and put these details in your server config file.