>Not sure what you mean by 'clients could ask who the other threads are'??

Nick let me preview his "VFP Chat" messenger. It's a pretty amazing piece of work. The clients can message other clients that have instanced the server.

My superstition is that true MTDLLs have a dynamic collection class embedded that maintains a list of clients that are currently logged (instanciated) on the server.

So - if my client inanciates the server, my client can ask "Who else is threading through the server?"