>That's not quite how a call back works, nor does it accomplish the same thing. There are many methods for a server process to determine what code the client runs, but allowing the server process to actually invoke the routine is what's needed. Your code sample simply invokes a synchronous method in the server and uses the return value to decide which procedure to call, but does nothing to determine when it should run.

A call back works more like ON ERROR (i guess). Larry forwarded a URL to VFPCOM - I'll check that guy out. Thats what we need, an ON EVENT service!!