This small and convenient program is intended for watching for presence computers at the Net. The program sends the request with a specific interval, determined by the user to selected computer. If it is exist - works alarm and programm issues the message "Name_of_the_computer is exist ". Also alarm works when the indicated computer disappears from the Net. This program can to change interval of a sending requests and their amount. Alarm can issue sound. Log-file is exist. Position of forms are saving before quit. Tray.