EXMerge is your friend

EXMerge is your friend

"One of the best utilities ever created for Exchange is EXMerge. You can get the latest version of this tool here, where it is listed as the Mailbox Merge Wizard:

http://www.microsoft.com/exchange/downloads/2003.asp

What EXMerge does may sound simple and may not seem to be all that generally useful: It can copy (or move) messages, rules and forms from an Exchange mailbox into an Outlook .PST file. And it can copy messages from an Outlook .PST file back to an Exchange mailbox. (If you're new to Exchange and Outlook, a .PST file is a message store you can create in Outlook regardless of whether you use Exchange. You can deliver mail to it from an Internet mail account, or create multiple ones to archive and organize messages. In current versions of Outlook, you can create a .PST file from File, New, Outlook Data File.)"

Might need this one day...