thanks for your help.

It is not my business, my friend give me this .bak file and want me restore
.. i donn't know why he just have a .bak file and how make it?
i moved this quesiton to Outlook Express newsgroup.

thanks again for everyone.

"Brian Tillman" wrote:

Brian Tillman wrote:

Probably because the file was neither a PST nor a DBX file to start
with.

Since I wrote this, another person supplied information indicating that the
..bak file could very wel be a pre-compaction dbx file. Since this is true,
get yourself to an Outlook Express newsgroup.
--
Brian Tillman