A system for placing and executing electronic commercial transactions via the Internet. A customer transmits a transaction code to a vendor. The transaction code is a URL that includes the vendor's Internet address, and parameters associated with a preconfigured commercial transaction. Transaction codes can be stored by the customer's computer as icons, and/or web browser bookmarks. The transaction code is received by the vendor, and the desired preconfigured commercial transaction is identified. The identified transaction is then automatically executed. The vendor may request order verification or entry of an authorization password prior to executing the order.