smithwdoug wrote:

Outlook 2007 hasn't been able to archive data because my archive.pst
file is still in the Outlook Data Files (97-2002) format. I managed
to convert my regular outlook.pst file to the newer format when I
upgraded from 2003 to 2007. (Since Outlook 2003 could read both the
older and newer file formats I wasn't even aware that the formats had
changed.) But I didn't get my archive.pst file converted and now I
can't figure out how to do it... nor can I find any instructions on
the Microsoft site. Does anyone know how this is done?

WIth Outlook closed, just rename the old archive PST and Outlook will create
a new one when autoarchive runs the next time.
--
Brian Tillman [MVP-Outlook]