What version are you using? In Word 2007 you simply mouse over and click on that top part of the page and it opens a header or footer dialog. Also, I see if you go to "Insert" and then to "Header or Footer" it gives you a series of options and at the bottom of the options it allows you to edit. Is this what you're looking at? If you're using an earlier version, I used to do it all of the time there, and get the results you're asking for. But I'll have to think a little about how I did it. There was a dialog box that gave you various options to add to what you wanted in the header/footer.

SRS