USPS Priority Mail Flat Rate Shipping 1.0
This shipping module is a quick way to add USPS Priority Mail Flat Rate Shipping to your store without dealing with connecting to the USPS web API. This will potentially save you and your customers some money as the USPS Flat Rate Shipping Boxes are FREE delivered to your home by the USPS and to ship they are the same cost regardless of the weight (no weight limit). Also, you can buy the postage online and print it at home and even schedule the USPS to pick it up at your home online all for FREE, meaning you never have to leave your home to ship your products saving time, gas, frustration, etc...
Support Forum: http://forums.oscommerce.com/index.php?showtopic=294676