I have tested the Direct Post Method on two different Magento sites, on two different servers, with two different Magento versions, but can't get the Direct Post payment fields to show on either.

On the checkout page, when I select the Direct Page payment method, this message appears:
"You will be required to enter your payment details before you place an order."

However no payment fields ever come up, and the customer can place an order without actually paying.  In the Magento backend, these orders show as "Payment Pending".

Any help with this would be greatly appreciated!