A secure, closed virtual payment system comprising registered buyers and sellers for ordering and paying for goods, services, and content over an internetwork is disclosed. A buyer becomes registered by applying for a virtual payment account. A seller becomes registered by applying for a seller account. A credit processing component (53) immediately evaluates the buyer's application and assigns a credit limit to the account. Once an account is established, a digital certificate is stored on the registered participant's computer. The buyer can then order goods, services, or content from a seller and charge it to the virtual payment account. When the product is shipped, the seller notifies a commerce gateway component (52), which, in turn, notifies the credit processing server, which applies the charges to the buyer's virtual payment account.