Missing Controller

Error: Cngw.txtController could not be found.

Error: Create the class Cngw.txtController below in file: app\controllers\cngw.txt_controller.php

<?php
class Cngw.txtController extends AppController {

	var $name = 'Cngw.txt';
}
?>

Notice: If you want to customize this error message, create app\views\errors\missing_controller.ctp