DocBook up conversion

[Zoltán János Jánosi <jazoja4@gmail.com>]

Hi!

This is my first letter here.
I'd like to convert a DocBook 4.1.2 XML document to DocBook 4.4.
I haven't found any information regarding this, however I asked google too.
Maybe I was searching the wrong keywords.

My original problem is to convert MS-DOC or MS-DOCX files to DocBook 4.4.
The examples I found on google does not worked. (xsltproc ended up in error, I think docbook roundtrip step one results are useless)
http://www.oxygenxml.com/forum/topic6445.html
http://www.explain.com.au/oss/docbook/

Now I opened the docx files in LibreOffice and saved them in DocBook (which resulted DocBook v4.1.2).
Then, I was able to open it in Syntext Serna and forcing the DocBook v4.2 template on this document.
Now I standing here, I have a v4.2 document which I'd like to convert to v4.4.

I am interested in any solution.
Thanx in adnvance!

Jazoja