From M$ website
WORKAROUND
To work around this problem, copy the contents of the Outlook 2003 .pst file to a .pst file that has not been converted to the Outlook 2003 Unicode format.
To copy information from a Unicode-formatted .pst file to an ANSI-formatted .pst file, follow these steps.
Note To follow these steps, you must have a .pst file from an earlier version of Outlook.
- Start Outlook 2003.
- On the File menu, click Data File Management, and then click Add.
- Click Outlook 97-2002 Personal Folders File (PST).
- Click OK.
- Click OK to accept the default name, and then click OK again.
Outlook 2003 now creates a new .pst file that is based on the earlier .pst and maintains the ANSI formatting for that .pst file.
- Click Close.
- At the bottom of the navigation pane, click Folder List.
In the navigation pane, you now see the new .pst file.
- Drag the information from your existing Outlook 2003 folders to the new .pst file.
- In the navigation pane, right-click the new .pst file, and then click Close "file_name".
Note E-mail messages or other items that contain Unicode characters will not be copied to the new .pst file.