Import/Export is not reccommended.
With OL closed simply copy the pst ('Export')
Presumably your pst is located on the hd and the read only flag is off?
In OL File/Open/Data File browse to the location ('Import')
If still err, try scanpst, the inbox repair tool

"Steve Katz" wrote in message
...
Hi,

I exported the messages from Outlook Express to Outlook, then exported to
a
.pst. Reformatted the laptop, now Outlook gives me a error when I try to
import the pst. The error is "the file is not a personal folders file.".
Anybody that can help I appreciate it.

Thanks,