Entourage Address Book will not sync with Mac or MobileMe Address Book
In Entourage preferences do you have Sync Services selected? In the
Apple Address Book, do you have sync selected under Accounts? Next open
System Preferences > Mobile Me and be sure to make the selections there
as well.
I suggest that you export a copy of your Entourage contacts first as a
..rge file before turning on sync. This way if anything goes wrong and
they are deleted or duplicated, you can replace with the backup.
File > Export > select as .rge and only check Contacts.
