>>Any of you aut there knows how can I send this message through the network?? I mean, how can I send a message from the server or any workstation A to any other workstation B from my app in VFP?.
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>Check out the NET SEND command for simple, user messages. For software level messaging, check out MSMQ, or Message Queing Services.

In addition to NET SEND, WINPOPUP used to ship with Win9x. In addition, several Win32 mechanisms such as named pipes and mailslots can be used to provided inter-process messaging even among remote systems without the need for MSMQ; they're covered in detail in the MSDN Library, and I've played with implementing them using CLSHeap to provide polled monitoring of pipes within a VFP app. Any number of third-party ActiveX products are available, too - I'd start at CNet's activex.com site.