It's actually like this:
type: rcon status
The 1st number you see is thier client ID.....
Now type:
rcon clientkick <their number here without brackets>
Jason Nagle
Network Tech
A+ Certified  Service Professional
                                                                                           
                    Fredrik                                                                
                    'Nybä' Nyberg        To:     mohaa at icculus.org                         
                    INF                  cc:                                               
                    <fnyberg at abo.        Subject:     Re: [mohaa] Kick command             
                    fi>                                                                    
                                                                                           
                    08/06/2002                                                             
                    06:16 AM                                                               
                    Please                                                                 
                    respond to                                                             
                    mohaa                                                                  
                                                                                           
                                                                                           
Eduardo E. Silva wrote:
> How do you kick a player that has metacharacters on his/her handle, such
as
> *,?,- ??? when I use the kick command on a player that has the '*' it
think I
> want to kick everybody!
>
>
> Ed Silva
> Silvex Consulting Inc.
> (714) 504-6870 Cell
> (888) 209-0946 Pager
>
Try:
clientkick number
where number is the number of the client you want to kick.
Nybä