I'm *guessing* that

strXML= ... lots of code ...
token = objSOAPClient.InsertInvoiceAndCustomer(strXML)

would work. Sorry, I only worked with the SOAP client one time several years ago, and I have forgotten all too many of the details. I do remember that I constructed the XML by hand, rather than using the serializer. But beyond that...

Did you ever find a solution to your classic asp and SOAP problem?

As i have the same mammoth task ahead of me and as always time is of the essence

Thanks

No afraid not, but the project was canceled so I no longer need to do it. However it would still be nice to know the answer as similar things can come up again.