Paypal to buy credits?

[RSL]

Ok, I've seen uCash and vbBux - and neither of them are as simple as what I'm looking for.

It's very simple. I want to allow people to buy 'credits' from paypal with IPN instanlty updating.

People can top up whenever they like and buy - for example - 10 credits for a dollar.

They can then 'vote' for other users by giving them credits, deducting the amount voted from their balance and adding it to the other users' balance.

I used to use Joomla! and com_vodes, which provides the exact functionality I want.

Doeas anyone know of a system for vB that will do this - this will immediately take away the need to stick with joomla/Mambo, so any help would be appreciated.

Thanks