Have you looked at ExMerge?
If you are copying a PST file, why do you need to create a copy instead of
just using the original PST file?
Dmitry Streblechenko (MVP)
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
"PST TOOL" <PST TOOL@discussions.microsoft.com> wrote in message
>I will migrate 1000+ users to Exchange 2010 and those users are using OL
> and OL2007. To help them migrate more smoothly, I will provide a tool for
> them to generate PST file with the same structure as an old PST file.
> Is it possible? How to begin this idea?