I have been using NWNCX for several years now. Unfortunately, unless you're using it to remove the camera limits or remove weapon visuals, the only use is removing its attempt to communicate with the Master Server upon first log in. The multiplayer server listing still depended upon some Gamespy tech that was also, unfortunately, taken down and rendered it moot. You still need to use Direct Connect along with a service like NWNList to reach a server.