Gents, try "teamspeak3" to arrange MP battles, very practical ...
both voice and written chat + OOB and doctrine transfer is possible.
Download: http://www.teamspeak.com/?page=downloads&type=ts3_windows_client_latest
We are waiting all clans and club Histwar Les Grognards Multiplayer gamers there
The above mentioned Teamspeak 3 server is a Joint effort bye members of the International Napoleonic Wargaming Club and the NBC to help support Historical Multiplayer game play in the Napoleonic and American Civil War Wargaming gaming communities primarily the Simulations (but not restricted to) HistWar Les Grognards and Scourge of War Gettysburg.
As administrator of the server it is my recommendation to use Teamspeak 3 and the HistWar les Grognards (unofficial) community lobby that I have set up in it to arrange, plan battles and help others sort out problems joining or hosting battles but that the actual in game communications be limited to the in game courier systems both titles provide. This to preserve as much of the historical game play accuracy as possible. However at the end of the day the system you chose to use is your decision ...just make sure all players in your battle are on the same page.
TS3 has an excellent file transfer system which is proving very helpful for the transfer of Map,oob,doctrine and scenario files between players and hosts .
All players are permited to create and password there own TEMPORARY channels/rooms just right click on the lobby and you will find the option available. Just remember if the rooms creator leaves/disconnectes the room will disappear and all in it will be moved back to the lobby.
Server Rules: There is but one rule "Respect thy fellow gamer"
Regards
Uhlanen ( Paladin)