[Opserty]

Are vBExternal.php and path to global.php not located in the same directory?

If not then something like this maybe:

PHP Code:

<?php
$curdir = getcwd();
chdir('path to forum');
require_once('path to global.php')
chdir($curdir);

chdir('../VB');
require_once('vBExternal.php');
chdir($curdir);
?>

If they are in the same directory you can just use 1 chdir() and require them both.