First thing was, I heard that Outlook 2007 should support Unicode data
files for IMAP (meaning Unicode plain-text messages in IMAP).
Actually, it has nothing to do with the IMAP protocol. It refers to the
newer Outlook PST data format.

I wanted to try that, but apparently the data file for that account
remained in its original (ANSI) Outlook 2002 format - why didn't it
didn't it offer to convert it? It turned out that there is no built in
option to convert the data file, but with the instructions in help, I
tried creating a new data file and importing all mail to there. This
all went great, except that I couldn't find a way to change the account
setting to use the new data file I created.
It doesn't offer to convert, because it can't. It should have asked you
though if you wanted to replace it with a Unicode file. In that case, it
basically would have deleted and recreated the file. Deleting and
recreating the account has the same effect.

Never mind then, I just created a new account - in IMAP everything's on
the server anyway. Except one thing: It is neccessary here that the
Outlook data file will not be stored on the local disk or in the roaming
profile (which is synchronized every time on log out and log in), but on
the user's home directory in a network share. So I wanted to go the
same way as I did it last time to move the data file to a network share
(mapped to a drive letter), using the instructions at:
Why not store it on the local disk?
Storing a PST file on a network share is a bad idea in general. It is a
recipe for data file corruption and other problems.

Patrick Schmid [OneNote MVP]
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http://pschmid.net
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Office 2007 RTM Issues: http://pschmid.net/blog/2006/11/13/80
Office 2007 Beta 2 Technical Refresh (B2TR):
http://pschmid.net/blog/2006/09/18/43
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Customize Office 2007: http://pschmid.net/office2007/customize
OneNote 2007: http://pschmid.net/office2007/onenote
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