Look in the upper left corner of the Main Menu of MTW (the Main Menu gives you choices like Single Player, Multi Player, Options) to see your version. It should say 2.01. If not you will need to download and install.

I've never ported a router, don't even know what a DMZ is, so it makes me wonder what you are doing. Last night there were 40-80 people in the GameSpy lobby.

good luck

ichi