To bypass the Startup option settings, hold down the Bypass (SHIFT) key while opening the database. This action will bypass any command entered in the startup window of Access. One of the commands in this menu is the Display Database Window Check box. If this box unchecked then the database will open with the form defined in the "Display Form" entry. In addition if you Uncheck the "special Keys" check box the user cannot use the "F11" key to call up the window. HOWEVER.....
If when you open the database from a the ACCESS command in the start bar if you press "SHIFT" at the same time then the "Start Up" box functions are completely ignored and the database window can be viewed.
How do prevent this? Please note I already know the suggestion that can replace the "File" menu with a custom menu HOWEVER this does not work when a user who has his own version of access opens a copy of your file.