> ox = CreateObject("Server.MyProxyObject")
> ox.NonExistingMethod(parm1, parm2)

> In the COM object I need to trap what the method call is,
> the params types and relay the call to the real object and
> real method. Basically acting as a proxy object.

How about something like

ox.CallMethod("NonExistingMethod", parm1 parm2)