$route[':any'] issue

[eluser]EEssam[/eluser]
Thanks Randy, but it didn't work, I'm getting a not found error:

$route['default_controller'] = "welcome";
$route['scaffolding_trigger'] = "scaffolding";

$route[':any/:any'] = "welcome/page_lookup";

My Welcome controller:

<?php

class Welcome extends Controller {

function Welcome()
{
parent::Controller();

$this->load->scaffolding('category');
}

function index()
{
$this->load->view('welcome_message');
}

function inde22x()
{
echo 'g';
}

function page_lookup()
{
echo 'cool';
}


}