[Deceptor]

Create a file called something like "optionsview.php", inside the file paste this code:

<?php
error_reporting(E_ALL & ~E_NOTICE);
require_once('./global.php');

echo '<pre>';
print_r($vbulletin->options);
echo '</pre>';

Save the file, upload it to your forums root directory then view it in your browser. I do not recommend keeping the file live for long since it's public, once you're done remove it.

Also note it'll show options from any modifications you have, not just the default vbulletin ones.