What version of Word? Does your Word document contain section breaks,
or is the whole thing in one section? When you say "on only one page",
which page do you mean?
For the header, in Word 2003 or earlier you can choose "Different first
page" in File | Page Setup | Layout, or in Word 2007 you can choose
"Different first page" in Page Layout | Margins | Custom Margins |
Layout, or you can use a conditional page field like:
{ if { page } > 1 "type header text here" }
For the footer, you can also use a conditional page field something like:
{ if { page } = blah "type footer text here" }
but replace "blah" with the actual page number you want the footer to
appear on.
If your document contains section breaks, then you'll need to turn off
"same as previous" or "link to previous" (depending on Word version) in
the headers and footers of the immediately preceding and immediately
following sections before you modify the header and footer of the target
section.
You really should read
http://support.microsoft.com/?kbid=555375 .