Ok, right edition forum, go up to CIVILAZATION III and you will see Civ 3 Technical Support, within you will find "Sticky:Crashing Multiplayer? -Info on Firewalls, Routers and Proxies". I hope it helps as otherwise playing hot-seat could get cumbersome. I was happy w/the idea of MP until I found it limited to 8 players. It doesn't spoil it (but a little bit). Might also try "Multiplayer and PBM sub-forum, it has a Q&A.