In Excel you can set up your "header" by using the first few rows of
the worksheet - if you don't select these to be repeated at the top of
each page then you will have what you want.

In Word you can set up Section Breaks, with a different header in each
Section. You will thus need a Section Break at the bottom of page 1
with your header defined for page 1 but with no header for subsequent
pages.

Hope this helps.

Pete