Guys i'm mad!!!!!!!!! I always connect directly to my motorola surfboard sb6121 (moddem) and i enabled UPnP and i port forwarded all the ones the support page and DMZ it, and I still have a strict NAT. I set my IP (on my Xbox) to manual and put the right settings (same with everything else) but it still wont get open NAT. I have tried wired and wireless connection, but no difference. I DO NOT WANT TO BUY A NEW MODDEM/ROUTER!!! I just want to play Halo with my cousins.