What to do when the toolbar Builder does not work in Excel prior to 2007?

To update the toolbar Builder5 (or Viewer5) in Excel: - Right click on \Builder5\in the main menu
_ Click on Customize >> In the Toolbars >> select Builder 5 >> Click on Delete >> Confirm Delete  
 >> Keep the customization window open >> again, right click on Build 5 from the main menu >> Click on Delete 
 >> Close the customization window >> Close Excel and restart Excel.