Victor,
>Thanks for the reply....do you have any link to this pproach or some code?

This was 8 years ago working on client side - I might have some code on one of the DAT - tapes in the bank vault from that time, but I am not sure...

Therefore from memory:
we checked quite a few angles, some of them failing only in one aspect but working in others:

one C way based on MSDN article "Call a Script from WebBrowser Application" or something like that
Implement a BHO (browser helper object) and IDocHostUIHandler::get_external ? since newer IE security blocks some interprocess access
access an external container with GetIDsofNames and Invoke
try IHTMLWindo2.ExecScript()
set from script and read out from vfp a special property on the Document-DOM
set a predifined mediator object var in script global space to external object and communicate with its properties/methods

the last approach is the one I mentioned before. Most of the ways were working in some configuration, not in all - and that was on IE4 and IE5.

HTH

thomas