How to hide thread details from guests in one forum

[hk2004]

Dear all

I want to keep the list of topics (in one forum or 2) but not the content of the threads available for guests. I tried from the control panel, it hides everything.

I tried this modification in showthread.php file but all forums were affected.

in showthread.php Find:

PHP Code:

globalize($_REQUEST, array(
'perpage' => INT,
'pagenumber' => INT,
'highlight' => STR,
'posted' => INT,
'goto'
)); 


Add below:

PHP Code:

if ($bbuserinfo['userid'] == 0) 

{ 

print_no_permission(); 

} 


Thank you