If he selects 'New' then it proceeds as before with configuring a new Exchange account.
If it finds any Entourage identities it will prompt the user to 'Upgrade' or create a 'New' email database. If it doesn't find any old databases then it proceeds as before with configuring a new Exchange account. ~/Documents/Microsoft User Data/Office 2004 Identities/ ~/Documents/Microsoft User Data/Office 2008 Identities/ When the script runs it will check for the existence of: The old instructions for deploying the script remain the same. The actual script you'll want to download is 'OutlookExchangeSetup4.5.scpt'.
The 'README' includes a handful of notes about what's changed. For now, I'm placing it on GitHub for download until I can get it better tested and documented. I've got a new version of the Exchange setup script for Outlook that supports importing from Entourage 2008 or 2004.