Handling partial payments/deposits?

[EvanGR]

In some orders, we require from the customers to do a partial payment, in order to begin the order processing.
(this is usually for custom-made goods, made specifically for a customer)

Is there a way to handle this in the VM order page?

Basically we want the Order page to know the deposit amount, as well as the remainder amount for the customer.

(This is irrelevant to the payment method.)

Thanks