Hautu - osCommerce Landing Page Checkout

Developer: Hi, we are looking for someone to implemented checkout DIRECTLY from a custom landing page. Essentially, after the person clicks "Order Now," they should be taken to a confirmation page where they can verify or change their information, and then if they continue, they will be taken to a success page. Currently, the site runs on osCommerce. Currently, when the person clicks order, they are taken to a one page payment info page. This is a modification we did to osCommerce. We want one of two things: 1) You know how to make it so that within osCommerce, you can make it so that we can go directly from the landing page to the confirmation page (removing the payment info page). There are obviously issues with the sessions, cart, and variables, but perhaps you know how to get around this. 2) You can create a separate little system outside of osCommerce that purely processes the orders off this special page with Google Checkout. We are fine with either solution and are flexible on price if you can prove that you can indeed solve this problem. Please respond with your proposed solution and why you are qualified. Blanket, non-specific replies will not be entertained. Please let us know an estimate of hours! Thanks!