buy forum access mod?
 

does any of you know of a mod that allows people earn points\credit to buy access to forums?

example;
i have all regular forums that regular people should see,
but i want that to be abale to earn points and "buy" their way to another group
they start as Members
and become VIP Members with like 500 points
and then Super VIP Members with another 1000 points
is there a mod for this?

I could do with something to work with vbulletins paid subscriptions.

I dont have a points system installed yet but if i could find a way that users could spend points to buy a subscription that would be great.

If anyone has any ideas or suggestions please post below.

Anybody got any info on anything can do this.