Because every brand has a different way of opening the NAT. Sometimes its just as simple as clicking open NAT, sometimes you have to put your xboxs ip in the DMZ zone. You dont usually need to forward ports at all for xbox live but there are ports you can forward to help, i cant recall which but check portforward.com, they should have the details. And for someone that has a knowledge of HTML i would have thought you'd have the means to figure this out for yourself instead of whining on the forums