When I try to quit Microsoft Office Outlook 2003, the program stops responding.
Microsoft Knowledge Base Article - 827408 admits there is a problem
when you have connected to your network through a network connection that is different from the one that Outlook 2003 is configured to use. Outlook 2003 waits for certain processes to end; however, these processes cannot start because the incorrect network connection was active when Outlook 2003 was started.

However, I am not connected to any network at present and I am using WIN XP PRO & plain dial-up connection. Outlook 2003 was installed as part of an upgrade from Office XP PRO to Office 2003 PRO.
Any ideas how to resolve this problem ?