Modify osCommerce for 1-step checkout.

I need to create an easy 2-step checkout process - shopping cart for web-based products - physical and digital. The functionality and looks of this checkout needs to be almost exactly as on this website: [login to view URL] ## Deliverables 1. Fully functional shopping cart and checkout process, almost exactly duplicating the functionality on this website: [login to view URL] Click on the button at the bottom of this page: [Try it now risk free] to see how quickly it moves customer to the final checkout. 2. Shopping cart must support checkout of physical products (with shipping and taxes) and downloadable digital products (PDF ebooks, ZIP files, etc...) via providing a custom time-limited download link upon purchase confirmation. 3. Shopping cart must support 3 payment gateways: [login to view URL] [login to view URL] and PayPal I will open account with these payment gateways and coder will find all the necessary script and interface codes needed to use these payment gateways, submit customer payment information, receive reply and file it into database. 4. Coder is free to use either existing open source CMS solution customized for the purpose or design his own. Code if free to suggest existing commercial e-commerce package. 5. Coder will prepare detailed document describing how to use, install, configure, setup and integrate this shopping cart with an existing web portal. 6. The solution should be suitable for any CMS-based web portal. 7. I plan to use AutoresponsePlus 3 newsletter tool, that will require adding a small predefined script into the shopping cart code page. I will provide the script. 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Linux, Apache, MySQL hosting on [login to view URL] hosting provider.