I do this by putting the header and footer content into a table. The table can be configured to be 100% width which allows it to adapt automatically to different page widths. You might want two or three columns in that table depending on whether you need left and right alignment or left/centre/right alignment. The first column gets content left aligned, the last column gets content right aligned.

The trick is to remember that the 'link to previous' setting overrides the width of the table so if you change from portrait to landscape (or vice versa) then you can duplicate the header content by turning on the 'link to previous' but then you need to turn it off again to allow the table to adapt to the different width.

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Andrew Lockton
Chrysalis Design, Melbourne Australia