Providing a site on a computer network, namely an internal computer network not available on the world-wide-web (Intranet) and an external computer network not available on the world-wide-web (Extranet)whereby potential buyers of goods or services locate and receive information from multiple participating vendors and whereby participating vendors to the Intranet and Extranet provide information about the goods and services to the potential buyers, and promoting the goods and services of others though online ordering of those goods and services; operation of a business for others in the nature of an e-mail message center that sends, receives, and manages electronic correspondence to and from the Extranet or Intranet users within the Extranet or Intranet