>os = CreateObject("Msxml2.XMLSchemaCache.4.0")
>os.Add(...) && XSD gets loaded here
>
>ox = CreateObject("Msxml2.FreeThreadedDOMDocument.4.0")
>ox.schemas = os
>
>... I think this is what you are looking for, Michel, not sure?
The approach of using the CreateAttribute() to add those references on that node went ok. This is the simplest approach I have found so far.