Remove New thread button for certain forum ID?

[LeX-]

Open forumdisplay.php
Find

if($foruminfo['type'] == "f" && $foruminfo['open'] != "no" && $fpermissions['canpostthreads'] != "no")

Change by

if($foruminfo['type'] == "f" && $foruminfo['open'] != "no" && $fpermissions['canpostthreads'] != "no" && $fid != X)

Open showthread.php

		if($forumpermissions['canpostthreads'] != "no")

Change by

		if($forumpermissions['canpostthreads'] != "no" && $thread['fid'] != X)

Change X by the FID !