A computer network system for implementing a web page providing method is composed of a personnel management system of a user, terminals operated by respective employees belonging to the user, and a server, which are connected to each other via a network. The server stores an employee management table defining the respective roles of the employees' a content management table listing URLs for contents to be provided to the employees, a roll management table defining providable contents and conditions for providing the contents for every role, and a displaying attribute management table defining a work schedule of each of the employees. These tables are updated whenever new data is received from the personnel management system. If a portal screen is requested from a terminal operated by any one of the employees, the web page providing program stored in the server causes a CPU to generate an HTML file for displaying, on the terminal, the portal screen incorporated with only the contents that can be provided in accordance with the conditions recorded in the individual tables and to transmit the HTML file to the terminal.