Provides a tutorial on Internet videoconferencing, offering a general description and then addressing: (1) end-user equipment needed (PC-based systems, standalone systems, auxiliary equipment); (2) server equipment; (3) applications of Internet videoconferencing; (4) the Megaconferences; (5) lasting results of the Megaconferences; and (6) the future. Sidebars explore the two types of videoconferencing, common commercial videoconferencing products, and videoconferencing etiquette. (EV)