Authenticated User Session Control On Non-VB Page

[LifesGreatestGift]

ok image script is now in

/home/jesse123/public_html/thewindows7site.com/forum/imagehost

and forum is in

/home/jesse123/public_html/thewindows7site.com/forum

I put the following at the top of the imagehost index.php

PHP Code:

<?

$url = "http://www.thewindows7site.com/forum/";


error_reporting(E_ALL & ~E_NOTICE);

define('NO_REGISTER_GLOBALS', 1);
define('THIS_SCRIPT', 'pageName'); 

chdir ("../forum");
require_once('./global.php');

if (! $vbulletin->userinfo['userid'])
{
    print_no_permission();
    exit();
}
echo "Hello!";

exec_shut_down();

// Rest of Image Host Script Below //

and get this

Warning: chdir() [function.chdir]: No such file or directory (errno 2) in /home/jesse123/public_html/thewindows7site.com/forum/imagehost/index.php on line 11

Warning: require_once(./global.php) [function.require-once]: failed to open stream: No such file or directory in /home/jesse123/public_html/thewindows7site.com/forum/imagehost/index.php on line 12

Fatal error: require_once() [function.require]: Failed opening required './global.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/jesse123/public_html/thewindows7site.com/forum/imagehost/index.php on line 12