An electronic musical apparatus M1 transmits apparatus ID information and a common page access signal to a server computer SC. The server computer SC receives the signal and apparatus ID information. On the basis of the apparatus ID information, the server computer SC searches a user database 106a to identify the model of the electronic musical apparatus M1. The server computer SC also retrieves content data of a dedicated page for the identified model from a content data storage section 106b. The retrieved content data is created in accordance with display capabilities of a display unit 13 of the electronic musical apparatus M1. The server computer SC then transmits the retrieved content data to the electronic musical apparatus M1. As a result, the user of the electronic musical apparatus M1 can view the information contained in the whole dedicated page in colors on the display unit 13 without the need for scrolling. Thus, the present invention delivers legible information to various different types of electronic musical apparatuses having a display unit with different display capabilities.