Try this:
Open it with Microsoft Word.
Choose "Save As" and choose the file type "Plain Text(.txt)"
When you click OK, WORD will open a dialog box to encode it. Choose "Other Encoding" and pick your encode. For Hebrew for example it would be Unicode (UTF-8).
Then just change the .txt to .doc and try again.
IMPORTANT!
Make a copy of the original before you play around with it for it might become unreadable.