Sorry for the delay.
Sop here is what you have to do - open components/com_comment/joscomment/comment.class.php
and find this line
if ($this->_tree) {
if ( !$this->_mlink_post || ($isModerator) )
$edit = $this->linkPost($id);
}
this is in the JOSC_post class I can't tell you exact line, because I'm testing with compojoomCommend and here this class is in its own file.
Anyway - change the above code to this:
if ($this->_tree) {
// if ( !$this->_mlink_post || ($isModerator) )
if($name != JFactory::getUser()->name)
$edit = $this->linkPost($id);
}
Now you should see a reply button on only comments that are not made from you.