Auto subject field for "Nodecomment" of RE: [parent-thread-title] type

I have a content type with ‘nodecomment’ enabled and what I want to pull off is the subject field automatically filled with RE:[parent-thread-title] while replying to the topic or the reply to the topic(Threaded discussion). There are modules to do the same if the comment is not ‘nodecomment’ type. The function should be in the form of a module.