how to play more than 2 players online ???

[Silverthorn]

In case I'm not too late on it (again), here's my two cents: LF2 Lobby (http://www.lf2lobby.com/) has been working fine for me so far, please check that you're using the latest version and have no firewalls blocking access. Other than that, there is Multiserver (might have to look deeper into the thread to find a working download) which has also been tested quite thoroughly. Please give them a shot