Whether or not you can do that depends upon the printer that is set as the
ActivePrinter under the File>Print dialog. If the printer won't support
that size page, Word will not make it available under File>Page Setup. If
it does support it, then you would just select that size page and format
your document according to the layout that you wish.
--
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