Logoff user remote session using CMD

Using CMD to kick user not properly logoff in remote session.
This command to list out the user. Have 2 command :

1 – quser /SERVER : [server name]

2 – qwinsta /SERVER : [server name]
This command to kick the user :

1 – logoff /SERVER : [server name] [session id]
Example :

C:\x>quser /SERVER:xxxx-xxxSxAPP
USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME
root console 0 Active . 5/21/2011 5:09 AM
anuar 1 Disc none 6/7/2011 9:45 AM
izuan rdp-tcp#42 2 Active 59 6/9/2011 10:47AM
C:\x>qwinsta /SERVER:xxxx-xxxSxAPP
USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME
root console 0 Active . 5/21/2011 5:09 AM
anxxxxr 1 Disc none 6/7/2011 9:45 AM
izxxx rdp-tcp#42 2 Active 59 6/9/2011 10:47AM
C:\Users\azam>logoff /SERVER:xxxx-xxxSxAPP 1