If you wonder how to use the new adsense authorization for your vbulletin forum then follow this example:

Auth URL: http://www.mysite.com/forums/login.php?do=login
Auth method: POST
Parameters:
vb_login_username =
do = login
vb_login_md5password =
vb_login_md5password_utf =

Source: VBulletin.org

If you want to add a new superadmin to your vbulletin forums then you will have to edit the config.php.
Edit $config['SpecialUsers']['superadministrators'] = '1'; and add the id’s of the users (seperated by a comma) you want to be a superadmin. If you only edit the usergroupsid in the database the user won’t have superadmin rights.

Be very carefull although who you give superadmin rights.