Since there have been a couple of new IE versions since Windows XP was
released, the procedure may vary dependent on which version of IE you
are using.
For IE version 7 try the "Page Setup.." pop-up on the drop down next to
the tool bar's printer icon. I haven't updated to IE version 8 yet, but
suspect it has similar functions. For IE version 6 the "Page Setup..."
option MAY be on the "File" menu.