An user interface for facilitating user operation. At time of an initial setup, the user selects a desired character, a room, images of items to be installed in the room, such as a television receiver set, a personal computer apparatus, etc. After selection, a user interface is formed in which images of the character and an item are incorporated into an image of the room, such as for example a living room selected by the user. The user may virtually reproduce his or her room at the user interface by imagining his or her room so as to select a room and install items. As a result, it becomes possible to provide the user with a user interface which allows an intuitive and simple operation.