Hi Wulfgar,
Sure you can ask. Answers are simple.
1. I have a library of DOCX files and don't care about DOC.
2. DOC is a terrible binary format, and DOCX (even though complex) – just an XML pack.
Microsoft has a utility for mass conversion of DOCs to DOCXs. E.g., this article gives a short run-through:
http://blogs.msdn.com/b/ericwhite/ar...c-to-docx.aspx