The Internet Connection Sharing (ICS) service allows your Vista computer to act like a network router. This can allow you to share one internet connection with other computers. The computer with ICS running must have multiple network cards, and must remain running for the other computers to access the internet. For these reasons, a network router, now relatively inexpensive, is a more common choice. For more information on ICS, see this page. This service is disabled by default. If you had previously enabled ICS, and now wish to disable it (perhaps you recently installed a network router) follow these directions.