[Skyrider]

Originally Posted by ForceHSS

So when a user gets to their max allowed pms and can't delete any what are you going to do did you ever think about that problem

I highly doubt that'll be a problem with tons of PM space.

Originally Posted by Dave

The array is an array of usergroupid's which are allowed to delete PM's.

if($vbulletin->GPC['dowhat'] == 'delete' && !in_array($vbulletin->userinfo['usergroupid'], array(6))){ 
  eval(standard_error('You may not delete private messages. <a href="private.php">Return</a>'));
}

Appears to be working perfectly, thanks!