[Logician]

In newreply.php and newthread.php find:

PHP Code:

  if (!isset($parseurl)) {
    $parseurlchecked="CHECKED";
  } 


and after that add:

PHP Code:

  if ($forumid==X) {$parseurlchecked="";} 


Replace X with the forumid of the forum you want to disable parsing..And remember this hack will overwrite the user's own selection in USER CP for auto-parsing.. They can still enable/disable in the posting screen though..