Hi
Vercor
Is this solved?
If not...
Open Outlook 2003,
File > Open > Outlook Data File
Browse to the location of the Outlook 2007 .pst file and select it, it should then appear in Outlook 2003.
To set that .pst file as the default .pst file:
Tools > E-mail Accounts > View or change existing e-mail accounts > Next
At the bottom of that window is a drop down field for:
Deliver new mail to the following location:
Click the drop down arrow and select the new .pst file.
Click:
Finish
You will need to close and restart Outlook 2003 for the changes to go into effect.
Let us know if that works for you or not.