This pertains to Outlook 2003 (11.6359.6408) SP1:
Suddenly I have lost the ability to add entries to my calendar.  Also, if I
click on my calendar entries in Outlook Today I get the following message:
"Unable to display the folder. Microsoft Office Outlook could not access
the specified folder location."  I have tried repairing the installation a
couple of times but that hasn't helped.  

The only major change I have made since the calendar last worked was to add
the NewsReader program 40tude Dialog which, by the way, is a heck of a lot
better than Outlook Express.

Any suggestions will be greatly appreciated.  Thanks.

Tony