open your postnewthread.php file

find:
'inputform'

replace with:
'formname'

----------->

find:
".displaysmileys("message")."

replace with:
".displaysmileys("message","formname")."

----------->

you must now also do this to the following forum files:

- postreply.php
- postedit.php
- viewthread.php

close and save all files. 

That's all!

Enjoy!
