You can collecting your online payments from your customers by:

1. Using your Paypal Account. Just enter your Paypal account email into Admin Center/Account tab, then the payment will just work. Paypal will notify you by email when you get paid, with the order ID for your reference.
2. Using your your current Internet merchant account. By configuring the URL poingting to your payment gateway in the Admin Center/Account tab, IDesign will redirect your customer to your payment gateway after they place the order.