Automatic forum thread

i have a pastebin at http://paste.org and would like to integrate punbb - in some way - with it.

to do:
create a punbb thread in the relevant forum at http://paste.org/forums/ for each new individual pastebin - based on whether they tick a checkbox, to do that, on the pastebin code submit side of things, of course.

I should be able to handle the cosmetic side of things but how would i go about generating a new thread automatically?