Client command line joining:

/internet 			Must be specified to join an internet game (that is, not a lan server)
/join=serveradress	The adress with optional port of the server to join.	

optional parameters:
/login=login		Account login to be used to play online.
/password=xxx		Account password
/serverpassword=xxx	If a password is needed to join the match

If any of these parameters is missing, the game will ask them to the player.

The nickname used is the one stored in the online account.
