Hi Jiin,
You should be able to open it in office 2010 xml editor. I have just saved my .doc file to .xml.
However, please find another version compatible with 2003 office version.
Attachments allowed are .asc, .txt, .text, .xml, .xsl, .gif, .png, .jpeg, .jpg, .jpe, .ics in scn.
Best Regards,
Rajen