'upgrading' from simple paypal buttons
Just wondering how and what the best way to use ecart to achieve the following.
Basically, I have a client who needs certain information from their clients in the first instance: delegate-details.php
Once they submit that (which is just a form submission) the custoemr gets taken to: payment.php
The payment options are, at present, just using the paypal buttons but my client now would like to be able to offer coupon codes to their customers
How would I go about doing this please?