simple one product ecommerce script with manual processing



does anyone know of a simple secure "order form" or a simple ecommerce script for use with just one product? most of them out there are overkill for what we need.
I can see how some of these scripts would be overkill if you have just one product. If you're not averse to it it, I might recommend PayPal.
i was looking more for something that we could intergrate into ther design of the site, and we dont really want any payment gateway except for manual processing. thanks