HELP!!!

Hi guys

Is anyone from here knows how to kill applications using cmd commands?
I want when i want to close my cod4 to press a button on the keyboard and automatically to close the application.Because sometime it stucks and only with this way the apllication can close. If anyones know pls reply me back.

ctrl + f4 i think.
You could also try alt + tab to minimize the window.

No thats not what i mean , im asking for making a command from your own. The shortcut i know it too. What im asking is more reacting than the shortcut. Sometimes when the pc is so overloaded the alt+f4 doesnt work. Im asking if anyone knows how to make a program on the cmd that can kill the application with a keyboard key. Thanks for the reply anw