Problems with custom controllers

[eluser]Unknown[/eluser]
Thanks but that was not really what I was looking for. The name "MY_Testcontroller" was merely there for demonstrating that anything other than "MY_Controller" doesn't seem to work. I started out with just "ACL_Controller" which ofcourse failed.

Code:

class Testar extends MY_Testcontroller {
    
    function Testar() {
        parent::MY_Testcontroller();
    }
    
    function index() {
        echo "hello";
    }
}

This is what I tried to do, but doesn't really work.