Hi 
DocX is supported already.
The question really is which version of DocX do you want it to
support? Supporting the format that they wrote up as an ISO
apparently means it wouldn't work in any version of MS Office.
Documents written using MS Office 2007 can't always be opened in MS
Office 2010 or 2013 apparently. Also the same version on different
operating systems can be different (according to their 2010
installer). So do you want us to support 2010 on Win7 or one of the
other ones?
MS cease support for Xp in just a couple of months and drop support
for Win7 next year. Win8 seems to be unpopular. Hopefully Win9
pre-releases might be better and catch on better but at the moment
there isn't a good OS of theirs that is worth spending time aligning
to.
Regards from
Tom 