Im using a Westell A90-7500 modem/router provided by Verizon. I connot play CoD with my friends because my NAT type is always moderate. How can I change it to Open? I do not have any networking experience at all so words like DMZ and port forwarding are all foreign to me. Can someone give me detailed step by step instructions for a complete noob? Verizon and Xbox tech support have gotten me nowhere so Im coming here as a very last resort. Thanks in advance.