Logan,
Hi. For payment gateways Dynamic Forms currently only supports Authorizenet and PayPal. You might (depending on their exact requirements) be able to work with that merchant account by setting up a Dynamic Forms HTTP Post event, or possibly just using the redirect option if they allow for a form to be redirected to a payment page on their site. Each merchant account and payment gateway is different so this might be something you would need custom development or assistance on. We offer premium support hours if you need them (which can handle custom development). You can find out more details at
http://www.datasprings.com/productsupport. Thanks!
-Chad