How to make a MW2 menu and implement it into the game

I wanna make a new menu and to put it into a .ff file, then implement it to the game to show it in a lobby or in main screen (when connected to online services). I'm asking for something simple: making a text menu and place it under NAT Type text.

Thanks!

Oh, you didn't stop copying aIW's old code? Better pay a visit..

what does that mean?