You can only send a Status check once you are already connected to the server console. 2 ways to do it basicaly. First is through the actual server console, just use the Status command.
Second method is you have to use rcon Status command if you are not on the ACTUAL server console.
1. In other words if you start the dedicated server (from a script config only, not thru the game)and are looking at the console window you can type Status.
2. If you start the ded server, go to another machine and start a game, bring up the console, you need the server password and tehn you can type rcon Status.
Comprende?
Heres a link to Bull's rcon guide, this will help too.
http://www.alliedassault.com/community/ ... ide2.shtml