All of the Office 2007 applications sport the infamous Ribbon. Unfortunately for developers, the Ribbon object isn’t as easy to control as its earlier counterpart, the command bar object. Access developers get a small bonus, as they can hide and show the Ribbon programmatically using the following commands, respectively:
DoCmd.ShowToolbar "Ribbon", acToolbarNo
DoCmd.ShowToolbar "Ribbon", acToolbarYes
Most likely, you’ll hide the Ribbon when you launch the database using an AutoExec macro or startup property. You could add a custom button that shows the Ribbon or simply hide and show the Ribbon as required.
Excel users can use a similarly easy set of VBA statements to hide and display the Ribbon, respectively:
Application.ExecuteExcel4Macro "SHOW.TOOLBAR(""Ribbon"",False)"

Application.ExecuteExcel4Macro “SHOW.TOOLBAR(“”Ribbon””,True)”

How you execute the code is up to you. You can attach the hide code to ThisWorksheet's Open event to hide the Ribbon when a user opens the file. Or you might execute it when you launch a user form.