Possible to display second currency for Commerce?

[expeditedshipper]

We're using a payment method set up as a custom coin. This is so users can go and purchase items using points (from Members Shop). If I try to add a "currency" under payment settings, it doesn't allow us to add our custom coin (which is found under "payment methods"). We'd like to be able to display this on the product pages. It displays on the checkout, but we'd like to hide the USD value on the checkout as we're only allowing the use of our coins for Commerce.

In summary:

1. Display custom coin on product page.

2. Remove USD from checkout and product page as it already shows custom coin on checkout page.

Are both of these possible?

[expeditedshipper]

Anyone?