[Logician]

edit functions.php, find:

PHP Code:

$post[message]=bbcodeparse($post[pagetext],$forum[forumid],$post[allowsmilie]); 


before that add:

PHP Code:

if ($forum[forumid]==X AND ($bbuserinfo[usergroupid]==2 OR $bbuserinfo[usergroupid]==5 OR $bbuserinfo[usergroupid]==6 OR $bbuserinfo[usergroupid]==7))
{
eval("\$post[iplogged] = \"".gettemplate("postbit_ip_show")."\";");
} 


Replace X with your forumid