It is possible within a Catfish Storefront to edit the name displayed to a customer of the Payment system you are using.
You may want it to say "Purchase Order Number" instead of "PO Number" or "Credit / Debit Card" instead of "Credit Card"
Browse to Admin -> Configuration -> Languages
Choose the link to the View String Resources
Choose Add New Record
The format for the Resource Name should be as follows:
For example, To rename SagePay, you would type
The value you enter for this string can be anything and the term entered here is what the customer will see on check out.
Save all changes.