Do you mean you are trying to rename a PST store?
PST filee format is not documented. On the MAPI level, all you need to do is
modify the PR_DISPLAY_NAME property of the corresponding IMsgStore object.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"Rick E" wrote in message
...
I need to be able to programmatically write over the information store name
(i.e. Personal Folders, Archive Folders, etc.) written (I believe) inside
the
PST file? Does anyone know the byte offset for this info? Its not stored
in
ASCII viewable format in the PST file as I've searched for it.