It may no longer be relevant but I happen to know the answer about getting unicode symbols out of Word and through to MobiPocket Creator. This is because I used to do this. Here is the answer - basically you needed to configure Word correctly.
Run Word to configure it to use Unicode, which is needed for symbols, when saving an HTML file. It will remember this setting. This also applies when it is called from within MobiPocket Creator.
- Start a new document then Save As.
- Save as type: Web page, filtered
- Tools/Web Options/Encoding: Change from Western European (Windows) to Unicode (UTF-8)
(That last crucial bit, Tools/Web Options/Encoding, is in the Save window.)