You can convert text and fonts in
Microsoft Word documents (*.DOC files)
Web pages (*.HTM or *.HTML files).
Because direct conversion is not supported yet, you can work around as follows:
1. Open Microsoft Word and read in your .DOC or .HTML files
2. Save the files in Rich Text Format (.RTF) filetype
3. Use WinVNKey "RTF Files" conversion to convert these RTF files.
4. Open Microsoft Word again and read in your new .RTF files
5. Save the files immediately in the original .DOC or .HTML filetype.