tom wright wrote:

If that is the case, if the index files have the same structure as the
originals, could they be copied with a new name and be successfully used
for an import? (obviously not used by tbird)

Unfortunately not AFAIK. OE and Outlook can only "see" mbox index files in
the format that occurs in Eudora and Netscape 4.x.....

You could do worse than to have a look he
http://www.broobles.com/imapsize/th2outlook.php

HTH

--
Gordon Burgess-Parker
Interim Systems and Management Accounting
www.gbpcomputing.co.uk