Hmm, just got around to actually putting this hack into action, and encountering a problem when trying to add someone:
[]SQL ERROR: Database error only visible to forum administrators
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home2/www/michiganjeepers/forums/mysql.inc.php on line 121
[/]
Every other feature works, except that one. And also.. why do the group mods have ability to ban users? That may not be too safe if it is a public ban, or is it just a ban from their forum?