A couple of other observations. I took out all .pst's from their normal folder, to see if Outlook 2003 would try to create new ones. It did not create a new one, but still shut down right away after displaying all of the messages in the Inbox of the .pst that I wanted to see. At least Outlook did not show up in the taskbar.
I tried another experiment. I placed a .pst named "Outlook" [the standard name] in the folder where the program should look for it, and not only did Outlook shut down from the screen immediately, it left an icon in the taskbar, indicating the program was still running, just not displaying. When I clicked on the icon, it replied with the system message, " Outlook is not responding. If you are using an Exchange Server e-mail account, you can cancel pending server requests by clicking the Outlook icon in the notifications area, and then clicking Cancel Server Request on the shortcut menu." I have no idea where this "notifications area" is, nor do I know what the "shortcut menu" is.
Not sure if this is material to the problem or not, but I stayed connected to the mail server when doing these experiments.
The .pst I want Outlook to default to is 190 MB in size. The other .pst is 283 MB in size.
Edited by Ever Learning, 02 October 2010 - 10:00 PM.