Can I Set Accounts This Way?

Question

I have 3 accounts on this iMac...mine (administrator), my wife, and Guest.
Is it possible to set things up so that if I, for example, walk away from my Mac for a time, when the computer is awakened from screensaver or sleep mode, it displays the three accounts and requires login to the selected one?
Setting the Security System Preference to "Require password to wake this computer from sleep or screensaver" is of limited value in my house, as it would require passing out my password just to restart into a different user account.
(As may be obvious, I haven't started looking into Accounts until recently...there may be obvious things I don't understand as yet).

Answer 1

The problem with auto logout is that it will close all of the users' applications and documents after the period of inactivity, which mostly defeats the purpose of fast user switching.
I have a couple of more ideas for you.
There is a screensaver called Ciao, that works like a normal screensaver, but fast switches to the login window when it activates. If you use this it would cover the wake-from-screensaver problem.
As for the wake from sleep issue, I have set up an Automator script on a hot key that does two things in one shot: It switches to the login window and then puts my Mac to sleep. Whenever I want to sleep my Mac I just press command-F13 and it's done. The next person to wake it up sees the login window. Ask me for more help on how to set it up if you like.
If you use both of these in tandem it should do what you want.