I have an oscommerce store with a custom checkout. The checkout is good because it has the "Easy Checkout a La Amazon" installed. It also has a custom modification ([url removed, login to view]) to allow the shopper to enter/change their shipping address ON the checkout_shipping page, without going to checkout_shipping_address. It also allows the customer to enter/change their billing address ON the checkout_billing page, without going to checkout_billing_address.
I want to further improve the checkout by combining the checkout_shipping and checkout_billing onto the same page.
You should look at the checkout that is currently on the site: [url removed, login to view] - you don't need to check out all the way to see how it currently works.
When I have chosen the bidder I will email the current custom files "checkout_shipping" and "checkout_billing".
All work must be done and tested on your own server, I will install it on my server because I cannot allow outsiders access to my company's server.
Helo sir, i have just checked your site and the way iy works, i can merge the two files and also create the JS function to complete the info necesary in shipping address. Please check your PMB for more info about me.