Hello Neil,

"Why is this stuff not documented in the vfp or asp.net interop literature. This seems so *basic*."

That's a good question, i've got this information from a COM book that explained COM internals from a C++ point of view, also don't remember a document targeted at the VFP developer audience that deals with this kind of low level COM requirements.

"Regards and thanx"
You're welcome!

Regards
Christian