1.  Select the cells for which you want to display a message.
2.  Click Data, Validation and then click the Input Message tab.
3.  Make sure the Show Input Message when Cell is Selected check box is selected.  To
     display a bold title in the message, type the test in the Title box.  Type the test of the message in
     the Input Message box, not to exceed 255 characters.  Press Enter to start a new line in
     the message.  Text must be in the Input Message for the message to appear.