This guide will walk you through the process of getting set up to collect payments via the Payflow Pro gateway.
Notes:
You will need to get a production merchant login and password from Payflow before you can use the gateway. The Partner field is also required, but is defaulted to the most common "PayPal" setting.
The first thing to do is login and go to the Account Administration area and drill down to Transaction Settings:

Once there, make sure "Allow reference transactions" is set to "Yes":

Once you confirm the change (if any) your Payflow Pro account should be all ready for Spreedly.
Drill down into the payment gateways configuration:

Add a new gateway:

Select Payflow Pro:

Now fill in the three fields, using your Payflow Pro credentials ("PayPal" is the default partner, but you can specify a different one if you need to):

As a final step, select which payment methods to use with Payflow Pro:

You should now be all set to go. As mentioned above, we highly recommend you run at least one real money transaction before exposing Spreedly to your customers.