Originally Posted by Graham
PayPal offers this functionality. When you go to the donation page you'll see a drop down on the right entitled "Don't have a PayPal account?". Clicking this will allow you to pay (through PayPal) using your normal credit card.
Sorry, not using PayPal means just that. I strongly suspect that PayPal take a small percentage of any payment you have them handle, even if you don't have a PayPal account.
I use PayPal, but wouldn't mind an alternative. But I also suspect that the extra work wouldn't be worth it in increased donations...