>>I need a dialer function or class that I can use to dial a number, send some data to the receiving computer and retreive lines of text from that computer. I feel sure that VFP 5.0 must have suce a class, but I cannot find it.
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>You can cosntruct such from the MSCOMM32 ActiveX control, which provides low-level access to serial ports. There are samples here on UT in the Files Section and FAQ that demonstrate the simple use of the ActiveX control.

You are also able to use the tapiRequestMakeCall IN TAPI32.DLL

Marcel