PingMon

PingMon constantly sends ping requests to a computer and displays the replies as a colored icon in the tray. You can use it to monitor if a certain computer is online and can be reached in the network. PingMon runs on Windows NT4.0 / 2000 / XP. You can use this program free of charge on as many computers as you want, but I don`t take any responsibility for it. You use it on your own risk!