Create A Forum - Support Forums

Guests cannot access a couple of boards on my forum. I would like to make it so that newly registered members cannot see them either until they have posted, say, 20 posts. I have tried several ways, un-checking the boxes on the boards that I don't want them to see, and even creating a new membergroup of people with a post count of 0, but in spite of this, a new member still sees them all. I would be grateful if you could advise if it is possible to do this, and if so, how. Thanks.


Edit: I have now found out how to do it, so don't worry!