Management information for specifying use environments of devices and application softwares at a plurality of user terminals is created at an administrator terminal. User-specific configuration information is generated at a server according to the management information obtained from the administrator terminal. The user-specific configuration information is referenced by installation support programs when a use environment of the devices and application softwares is built at a user terminal. The user-specific configuration information is distributed from the server to the user terminal, together with device drivers of the devices, the application softwares and the installation support programs.