in newreply.php
find:
PHP Code:
if ($action=="newreply") {
under it add:
PHP Code:
if(($foruminfo[forumid] == XX) AND ($bbuserinfo[posts] < YY)) {
eval("standarderror(\"".gettemplate("error_columnforum")."\");");
exit;
}
then create a new template called ::
error_columnforum
put the error you want to show in that template...
replace XX as the forumid of the forum that you make the column forum and YY as the minimium amount of posts before they can reply in that forum

regards and hope that helps
g-force2k2