from
http://office.microsoft.com/en-us/ou...124801033.aspx
Work with multiple data files in one profile
If you have multiple .pst files in your Outlook profile, make sure that your default delivery location is still correct after you complete the preceding steps. The default delivery location is the data file where new messages will appear in the
Inbox.
- On the Tools menu, click E-mail Accounts.
- Click View or change existing e-mail accounts, and then click Next.
- In the Deliver new e-mail to the following location list, make sure that the correct data file is selected.
- If you need to change the selection, make sure
does this help?