[Shadab]

Me again.

Not really sure if chdir()'ing to the vBulletin's directory before including global.php will help;
try and see if this works:

PHP Code:

// [...]

$currentDirectory = getcwd();
chdir('/home/path/to/your/vb/forum/');

// Statements for vBulletin insert

// [...]

// Statements for vBulletin insert 

chdir($currentDirectory);
unset($currentDirectory);

// [...]