Checkout Settings
To edit the checkout settings for your shopping cart
click on Settings on the admin menu and click the
Checkout link.
Checkout Message: If you want a message on your
checkout page you can enter it here.
Checkout Options
There are extra fields that can be shown on the
checkout page for your customers to fill out.
Countries
Here you can select what countries you want listed in
the billing and delivery country dropdowns on the
checkout page.
CMS Help - Checkout Settings