I had Word XP set up with a button in my toolbar (or what Microsoft refers to as the Quick Access Toolbar ribbon in Word 2007) for changing the case. All I had to do was highlight the word and hit the button "change case" and keep hitting it until the desired case was set. (Upper case, lower case, all caps, all no caps. Does anyone here know how I can put a button on the "ribbon" in Word 2007? I believe it would go alongside such buttons as the save, new file, open file, autotext, page setup.
Guess what? I just figured it out! I will post "how to" here for the benefit of others. You click on the top left-hand button Office button when Word 2007 is open. A drop-down menu shows and you select "Word Options" and from that list you select "Customize". It says on the top, "Customize Quick Access Toolbar and Keyboard Shortcuts. Below that the default shows "Popular Commands". Change case is not found in the popular commands so you have to click on the down arrow on the screen from the "Choose Commands From" drop-down menu. Select "All Commands" and the drop-down menu for that is an alphabetical list. From that list you find Change Case (there are two, I selected the first one in the list). You highlight change case and "Add" it to the list on the right-hand side and scroll down and click "Okay" at the bottom right. Now the "Change Case" button will appear on the Quick Access Toolbar at the top of your word document.