>I am developing an application for Search & Rescue (SAR) which enables multiple PC's to be networked together at a SAR operations site. Most of the users are unfamiliar with networking and each SAR mission is temporary (a few hours to a few days) at wherever the operations site happens to be.
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>I would like to be able to display on the VFP status bar whether the computer they are using is the host computer or a 'remote' hooked into the network, mainly to avoid the host being inadvertently shut down by the inexperienced users. Does anyone know of a command which displays whether the PC is the network host or the remote?

Not sure what you mean by "remote" and "host". Are you using a peer-to-peer network? To prevent someone from shutting off the pc with the data, it would probably be best to designate one pc as the server and not allow people to have access to it, at least until the search and rescue operation is complete and they are shutting everything down.