I trying to play Age of Empires 3 multiplayer game on lan. I am running the game windows 7 on one computer and the other with windows xp connected through a router and firewall for Microsoft between machines. I tried everything I can, including turning off the firewall, but I can not play between the two machines. The XP creates the game, the Win 7 you can see the game, but when I click Add and the screen can not join game. Everything else on the network works well. Can you tell me why I am not able to join Age of Empires 3 multiplayer game. Any suggestions ???