MyBB Community Forums

I need to make a single forum in my website proteted in such a way that:
Users can post new threads, but cant read old threads made by other users.
Admins can view all

I am having a paidtopost and free domains and stuff website, so i need that forum for people to request thier paouts. so that their paypal emails are not exposed and so on

This isn't possible by default. You need a plugin for this purpose.

do you know any that is already made?

Dennis made something similar for MyBB RC4: http://dennistt.net/forum/showthread.php?tid=9

I'm not aware of a plugin for MyBB 1.2.x.

I think Tikitiki updated it to MyBB 1.1.x at one point or something... but no up to my knowledge there is no update for 1.2.x sorry.