>>What I need to know is if not called as above, HOW WILL THE COM SERVER KNOW WHICH METHOD TO CALL INTO THE CLIENT TO INTERRUPT IT, WHEN IT DOES RECEIVE A WEIGHT.
>
>It almost seems that two values would need to be returned. One would be a pointer to a method, and the other a weight value. There is another VFP guy called AutoYield - but you have probably already considered him.

VFP doesn't support call backs, so a pointer to a method will not work. The closest thing to do what Bernard needs is a COM server that raises an event, and the VFP client can bind to that using VFPCOM.