With this ASP based USPS online shipping calculator, there is no need to register any DLL or COM objects in your hosting server. This is very useful to many websites that are hosted by a 3rd party hosting server because most of the time, these 3rd party hostings do not allow the installation of ACTIVE-X, COM or DLL objects. You simply save the included ASP file into your website html/asp folder. You can call the function from anywhere in your asp pages and use different parameters like origin and destination zip code, shipment weight and delivery options.