How can I make it so that Outlook 2007 doesn't remember the password that it had previously used to authenticate to the Exchange 2010 SP1 server?

How can I make it so that Outlook 2007 doesn't remember the password that it had previously used to authenticate to the Exchange 2010 SP1 server?

I have set up Outlook 2007 so that every time that Outlook 2007 is launched, the user much type in his Active Directory password to be authenticated to the Exchange 2010 SP 1 server.

The problem is that after the Outlook logon username and password are entered and Outlook successfully authenticates to the Exchange server, every time that Outlook is closed and then re-launched after that, Outlook authenticates to the Exchange server automatically (without asking for the user name and password to be re-entered) since it remembers the user name and password because it had already been entered before.

This is what I need to do. I need to make it so that EVERYTIME that the user launches Outlook, the user will be prompted to enter his username and password. Then the user needs to be able to close Outlook and every time that Outlook is opened again, the user must be prompted to enter his username and password. Furthermore, we need to make it so that if someone clicks on the cancel button when prompted to enter the Outlook username and password (without successfully authenticating to the Exchange server by typing in the correct username and password) Outlook WILL NOT OPEN AT ALL. We don't want anyone to be able to access Outlook and then be able to browse through and read any of the emails that are in the Inbox unless they type in the correct username and password.

I need to make it so that every time that Outlook 2007 is closed, the Windows XP SP 2 computer will no longer remember the user's Active Directory password that it had previously used to successfully authenticate to the Exchange server.

Please tell me exactly how I can set up Outlook so that it will not "cache" or remember the Active Directory password that it had previously used to successfully authenticate to ("logon to" the Exchange server).

Please provide me with the exact steps on how to do this.