hello ive been trying to get a nat type 2 on my ps3 but this freaking router is giving headache i got atnt high speed internet service. i tried dmz, port opening, opening my upnp and even hooking my modem straight to my ps3 it still nat type 3. anybody knows if i replace this modem will it fix my problem? will i be able to connect to my isp with a different modem that they provided me? PLEASE HELP