FileFormat number as 0 seems working when tested on another system. I think, for Word2007, it is 12. I tried recording a macro to find out what is happening. For Word2007, it uses wdFormatXMLDocument

And for Word2003, it uses wdFormatDocument which has the value as 0.

Values are in here: http://msdn.microsoft.com/en-us/libr...ffice.12).aspx