In this tutorial, we learn how to make a Call of Duty 4 working server. First, go into your game and go to "start new server". Next, name it whatever you want and put internet into the dedicated section. After this, save the information and a console will pop up. Don't close this, minimize it. Next, open up your game and go to "join game" and search for your server. When you find it, click on the information and write down the IP address it has inside of it. Now, go to XFire and type in the IP address to "add custom IP". Next, click "ok" and then click the bottom button to join with your server. After this, you will be finished creating a working server and your game will load.