Invoking Word 2003 document from InfoPath 2003

Hi Friends,

I'm developing an web app in .NET wherein user will first insert some XML file into the Word document and right-click and select "Edit in InfoPath" to edit the XML. Once user saves the
changes and close the InfoPath 2003 window I need to make sure that the changes made by user are automatically refreshed (displayed) in the Word document. I tried to find out how one
can invoke Word 2003 document from InfoPath but couldn't get any good solution.
Can somebody help in this???

Thanks in advance.

cheers,
debsoft