[Chris M]

Edit /includes/functions_databuild.php
Find:

PHP Code:

    // get newest member
    $newuser = $vbulletin->db->query_first("SELECT userid, username FROM " . TABLE_PREFIX . "user WHERE userid = $members[maxid]"); 


Replace with:

PHP Code:

    // get newest member
    $newuser = $vbulletin->db->query_first("SELECT userid, username, usergroupid FROM " . TABLE_PREFIX . "user WHERE userid = $members[maxid] AND usergroupid NOT IN (3,4,8)"); 


THIS IS UNTESTED

If it doesn't work, this is at least the right area to be looking in

Chris