Grant someone access to a page

[DPtheGod]

Hello, I am running a script that will only grab a file for the user if they are specified as a primary member of my administrator usergroup. However, I want the script to grab the file for my "Subscribers" usergroup, which everyone is an additional user to. I have this script set up right now to get the file for the admins:

PHP Code:

                   if ($vbulletin->userinfo['usergroupid'] == '6,161,' )
    {
    $filename = $_GET['filename'];
                   } 


Does anyone know how I would have to set this up in to make additional users of the specified usergroup gain access as well? Thanks in advance!