You probably corrupted the pst by ovewriting an existing pst.
Use the mail applet to add a new clean data file, set it as default and
remove the old
Start OL & verify its operational.
Copy your old pst(s) to some other location, eg Documents folder
Within OL open the old pst

"vb" wrote in message
...
When I try to open Outlook 2007 (after a transfer from older system with
PC
Mover) I get the error message "cannot open your default email folders.
The
file c:\documents and settings\john smith\local settings\application
data\microsoft\outlook\outlook.pst is not a personal folder file." What do
I
do to remedy this? Thanks in advance