This page has a pretty clear tutorial for moving mail from Outlook to
Entourage.
<
http://www.riches.com.au/articles/export-outlook-entourage.htm>
Outlook2Mac advertises that it can automate the same procedure. However,
some users have noted that contacts, calendar events, and tasks don't always
transfer properly.
<
http://www.littlemachines.com/>
Alternatively, you can use an IMAP server to transfer mail. You can get a
free IMAP account at <
http://www.bluebottle.com/>. Create folders matching
your local folder structure on the IMAP server. Drag-copy messages from
Outlook to similarly-named IMAP server folders. Go to Entourage and access
the the same IMAP account. Drag-copy messages from the server folders to
similarly-named local folders. If necessary, delete messages from server,
go back to the exporting program and repeat the process as often as
necessary until done.
For contacts, calendar events, tasks, and notes, check out Paul Berkowitz's
"Export-Import Entourage" script package.
<
http://www.scriptbuilders.net/?search=Export-Import+Entourage>
(There is no Outlook 2004 that I am aware of. The instructions above are
valid for most released versions of Outlook.)