Hi Willy
This sort of depends on exactly what kind of document this is. XML covers a pretty wide range of things...
Could you perhaps copy a few lines of what you see in a Text Editor or XML viewer and paste it into a reply?
What are you expecting when you open this file in Word? Are you expecting it to show you a "document"?
Based on your original question, my expectation would be that you're expecting to see something like you do in the XML Editor. And with Word 2007 I'd expect that only if you haven't got Word 2007 installed with the post-January updates for North America,
which removes XML from the user interface (due to a court decision).
I'd only expect a "document" if the file had been saved in Word 2003 (Windows) as an XML file, or in the new *.docx file format. If you're seeing "MAC" in there, that's probably not the case. Question is, though, whether this is just an instruction for Internet
Explorer, or whether the basic XML is totally different. Do you know what program created the document? Do you have contact with the person?
Cindy Meister, VSTO/Word MVP