Where does Word Document Store the attached XML Schema?

[Muhammad Amjad]

In my application, there's an edit box where the user enters full path
to a Word document (.doc). On the "Get Schema" button, I need to parse
the word document and extract the schema it references and show the XML
Schema (XSD) in a tree.

Does anyone know, Where does the word document store the XML Schema?
Does it store the xml schema inside it (active document)?
OR
Does it store the xml schema in the Schema Library?

In any case, how can I get the referenced schema(s) from there
programmatically?

ANy ideas?

Thanks,
MuhammadAmjadIqbal at the rate of google mail