Using Word 2003, XP, on a dell computer.

I keep losing: Show screen tips on toolbars. I click on tools, then customize, and put a check mark in Show screen tips on toolbars and a check mark in Show shortcut keys. Close.

I use it one time and the feature is then lost. I have to go through the same process again and again. How can I lock in those check marks so that screen tips are shown?