There is provided an information processing device capable of dynamically generating and presenting to the user a user interface for remotely controlling at least one other device connected via a network and performing conjunctive operations between the information processing device and the other device, the interface being generated in accordance with the type of the other device. A further identification of the participant only takes place in a case where the latter actually is to receive a win. Additionally, the present invention provides for a snap ring for placement into an aperture of a base plate including a screw retaining mechanism mountable and movable on the plate between locked and unlocked positions relative to the aperture for preventing a screw from backing out. One embodiment also includes multiple scheduling lanes for scheduling items, such as, but not limited to packets or indications thereof, such that different categories of traffic of scheduled items can be propagated through the hierarchy of schedules accordingly without being blocked behind a lower priority or different type of traffic. And the horizontal damping unit includes a pair of belts each having a driven end directly connected to one respective handle or pedal lever and a damping force-generating portion located at an opposite end thereof remote from the driven end. The authentication key is used to generate an expected message authentication code used in authenticating the network according to authentication and key agreement security protocol.