Yesterday we I attended such a training about Free Open Source Software (FOSS) and that's OpenOffice/Libreoffice there. On some discuss we find interesting topic that is how can we free from Microsoft software dependencies (overall) totally, and could we convert all microsoft office document (*.doc) we have to open document format (*.odt). It would be easy if we have less than 10 document (*.doc) to convert to odt, but if there more than 10 document course will take a long time.
There was video tutorial that show us how to make mass convert .doc to .odt easier. check this video for Easy mass convert .doc to .odt taken from youtube.com.
video tutorial mass convert .odt to .doc