I run a website where I sell a single piece of software. Currently, if a user clicks on one of the "Order now" links I have throughout my site, they are directed to the software's product info page. On that page they click the button to add the software to the cart, at which point they are directed to the shopping cart page. And here they must select the checkout button. Nothing shocking here--this is all standard Zen Cart procedure.

I'd like to change my site so that when a user clicks on a "Order now" link he is directed DIRECTLY to the checkout page. This means I would bypass the product info and shopping cart pages. Because I only sell a single piece of software, these pages are superfluous.

How can I do this in Zen Cart? Is it possible to add something to to the shopping cart and direct the user to checkout all with one click?