I want create a Typical Controller and extends all controller from it, but CI don't find

[eluser]Kaosland[/eluser]
Hello

I create a controller with fonction i call frontcontroller beccause many page don't change almost.

Class FrontController exends Controller{

function __construct() {...}

function 1;
function 2;
function 3;


}

I have place un controller rep, i tested un lib rep with $this->loadlib...

but when I want create one controller exends FrontController, i have error Fatal error: Class 'FrontController' not found.

So someone can tell me how i do for working.