Thanks to Conner for suggesting Ping which works, but the specs (I just found) require that the clients program interrogates the commanders program to determine if both programs are running and connected to the net. EG, say you were a user of my program, and had it running and you were connected to the net, I (as the commander) could determine your programs availability, or vice-versa. In other words I'm not speaking of an internetwww., but a computer with a program running, and if its connected. Cheers, Al+
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