1. A cyber-space system comprising: one or more cyber-spaces for providing predetermined information; and user terminals for receiving the predetermined information by accessing the cyber-space; wherein the cyber-space includes: information objects for providing information to the user terminals; user objects corresponding to the user terminals; and a conversion object disposed between the information object and the user object, and capable of converting a terminal manipulation message from the user object into an information access message and supplying the converted message to the information object, the conversion object further capable of converting an information content message from the information object into information corresponding to the capacity of the user terminal and providing the converted information to the user terminal.