how to do so the first post of thread shud have [MP3] bbcode.

[Selene]

--------------------------------------------------------------------------------

lets say i have a bbcode of [MP3] that is used once someone makes an attachment of mp3.

now lets say on forum id 3 i want the first thread to have that [MP3] and [/MP3] otherwise the thread wont get posted.

SO how do i do that to a forum id X ? so [MP3] is required in first post.