Abstract: A server system for multi-level vending of any electronically transferable product through a communications network directly to a customer's computer. This server system (herein called a Sales Support Server) integrates the collection of a payment via the network and the automatic distribution of the product with the calculation of commissions using a multi-level marketing commission structure and the distribution of commissions and fees via the network. The preferred configuration includes a client application (herein called a Sales App) which runs as a plug-in to a network browser on the customer's computer and which provides a purchase request and registration data to a Sales Support Server and performs the installation of the product on the customer's computer. The Sales Support Server acquires the payment, transfers the product, calculates and pays the commissions, and adds the purchaser's registration information to the multi-level sales database for the product.