I'm using an open source ecommerce platform called PresaShop - http://wwww.prestashop.com. The main problem is there are no shipping modules for US carriers. Need a USPS (United States Post Office) shipping module created.
Note: Those who can create this at a reasonable price will have more work from me as I need an [login to view URL] module, and a UPS module as well. But that's AFTER this job is successfully completed.