How do I add a portrait page number to a landscape page in Microsoft Word?
From Microsoft Word’s Knowledge Base: If a page of your document is formatted with landscape orientation, the header and footer of the page are also are formatted with landscape orientation. This article describes how to use rotated text in a text box or table to add a page number in portrait orientation to the header or footer layer of a landscape-oriented page. http://support.microsoft.com/?kbid=211930.