In Excel 2003, if you wanted to put page numbers on multiple worksheets in a
workbook, you grouped the worksheets and then added a header or footer, using
the page number function. All of your grouped worksheets would shows its own
page number.

But in Excel 2007, only my first worksheet is numbered when I do this (as
Page 1). What's the problem? Do I actually have to put a page number, one
by one, on each worksheet?