Page set-up

Using Word 2003, I have created a flow chart (that is in landscape) and imported it from Excel in to my word document. But for this page, the document (including headers and footers)is in portrait. I would like this page to be portrait but with the flow chart in landscape. If I am successful with this flowchart I have a lot more to realign which is one reason why I dont want to redraw this flow chart. Also by keeping it in Excel, which I prefer for drawing flow charts I can easily amend it.

Any ideas please.