Using Google Checkout
Here is how to do it. A little bit more to it than with PayPal but not much. The slightly lower fees should make the tiny bit of extra work worthwhile. Make sure you have SSL set up on your store before continuing.
Google Checkout account
Go to the Google site for your country or region. Click on Business solutions and then Checkout and sign up for a Google Checkout account if you do not already have one.
Installing the checkout
Have your Google Checkout account open in a tab on your browser and your PrestaShop control panel in another. We will be clicking back and forth between the two.