how do i code a new thread in a forumid.

[Vaupell]

gonna make a template, and a form, when filled it submits a new thread
with given parameters..

say template is the thread/post contents..

thraed title : test title (stored in options [test_title])

template : test_thread

This is a test thread

preset forum id : 1 (stored in options [test_forumid])

I just make a button somewhere random, and when i click that button
i want it to post a thread with the parameters above..

And usually when i dont have a clue how to start, i check out vbulletin code.
but i just cant make sense from newthread.php

plus it seems like alot, when back on 3.x we could post a new thread
with maximum some 50 lines, and all the counters etc was set correct for the new thread.

havent seen any vb4 mods yet, that post new threads either, so cant see how others do.
Any help on how to progress ?