IF you have the "Always create backup copy" box checked under
Tools>Options>Save AND you have only saved the document once, then you can
use the backup copy.
Or, if you started by opening the document and then changed it AND you have
not yet closed it, use Undo to undo the changes.
Otherwise, you are out of luck.
--
Please post any further questions or followup to the newsgroups for the
benefit of others who may be interested. Unsolicited questions forwarded
directly to me will only be answered on a paid consulting basis.
Hope this helps
Doug Robbins - Word MVP