USPS Rate V4 Intl Rate V2
THIS ADDON IS CONSIDERED OUT OF DATE AND ABANDONED
Please see http://addons.oscommerce.com/info/8702
This is a clean and simple module, intended to perform it's function efficiently and simply, without any frills or gimmicks.
All domestic and international methods (regular, flat rate, and regional) are included, and you have the choice of which methods to offer your customers.