how do you set up pay per view with an alternate payment gateway

as far as I can tell Pay Per View only allows for Paypal connectivity I have chosen not to use Paypal and need to associate it with another payment gateway. how can I do this?
Or can I associate it to the same gateway market press is associated with, by using it in conjunction with market press, in some way.
I really don't want to use two gateways when I only need one. and prefer to use the cheaper of the two.

thanks in advance.