the command your referenceing the whole rcon thing
really needs to be entered in the console portion of a valve game like css
or if you arent familiar with it theres a program called hlsw that allows you to enter rcon commands monitor the server and it even has its on irc bot that relays stats into the irc channel you designate

so... what you really need is mirc to take what you say and enter it into hlsw
which im assuming you use, if you dont you should
i could be wrong and maybe have overlooked something
anyways good luck