A conventional configuration file edition method used for changing operation of a program that is operated on a computer involves a problem that a user is required to learn a complex method for changing a configuration file when a plurality of programs are provided in the form of one product because the method is different for respective programs. An intermediate configuration file that stores setting information of a configuration file, a method for forming a configuration screen, and a method for forming a configuration file is prepared, and provided to a configuration file integration base. The configuration file integration base provides an integrated configuration console to a user by use of the intermediate configuration file. The setting information is stored in the intermediate configuration file when a user changes the setting information on the integrated configuration console, and a configuration file is formed from the intermediate configuration file.