J. Andrzej Wrotniak has an impressing website focusing on the Olympus system with lots of articles related to the Olympus E-System cameras. His last updated article is on how you can customize your Olympus E-500 to make the camera easier and more pleasurable in use.
“..once you customize the camera to your taste and working habits, you will most probably leave these settings the way they are. All of them are accessible from the two Settings menus.
I’ll be going through these settings in the order in which they are listed in the menu system.
One thing to remember: in order to have all these settings available, the camera must be set in one of the non-all-auto modes, i.e., the mode dial should be in P, A, S, or M position.”
See also: Digital Camera | Olympus