Email Migrations have never been easy tasks as every email client uses different fle format to save their data. Being from the same manufacturer Entourage and Outlook have different file formats which need to be converted to import emails on either of them. If you are import entourage files in outlook then you need to change Entourage files to PST format that can be easily imported into Windows Outlook. Use
Entourage to PST Converter for this process to convert entourage files to pst format.