$route = new Zend_Controller_Router_Route('user/reset_password', array(
                'module' => 'default',
                'controller' => 'user',
                'action' => 'resetpassword'
            ));
$front_controller->getRouter()->addRoute('reset_password', $route);

interface Zend_Controller_Router_Route_Interface {
    public function match($path);
    public function assemble($data = array(), $reset = false, $encode = false);
    public static function getInstance(Zend_Config $config);
}