This script allows you to have a quick & easy credit card payment terminal for your clients (Visa, Master Card, American Express, Diners Club) processed by DPS PaymentExpress.com OR accept payments using paypal website payments standard with paypal.com. Installation and configuration of the script takes less than a minute (however you do need to have SSL and paymentexpress.com merchant account, and optionally paypal account). There are 2 options to pay: first option is that customers can input price themselves and type description, second option you can turn on pre-defined services and customers will select service from dropdown.
1) You need DPS paymentexpress account (you can register here: paymentexpress.com)
2) You need to install SSL certificate before going live with this terminal
3) cURL must be enabled on your hosting account (check with your hosting provider if unsure)
4) Optionally you need paypal account to accept paypal payments (can be turned on/off)