Can't Create server. why? :(

[Ataros]

Steam needs many ports to be open (check Steam FAQ for servers).

Maybe your provider placed you behind a router or blocking some ports. Try talking to them with the list of ports taken from Steam FAQ.

You should be able to set a server in Lobby anyway though. Keep trying.

[HomerMix]

Well, setting up servers in other steam games such as Counterstrike Souce and HL2 Deathmatch works fine. So there must be something messed uo in my clod.
Any idea what i should look at?