Firstly, you have to locate your database file of an entourage which you want to import into Outlook 2011 for Mac
Then, copy it at the another location on the same computer
After this follow the steps mentioned below:
1. Go to Application Microsoft Office 2011 Microsoft Outlook
2. Their click on import, which you will find in File menu
3. Then, in Import wizard, click on the option ‘Entourage information from an archive or earlier version‘, and then click on Next button
4. You will see a dialog box over there, select ‘Entourage 2008 (Including Web Services Edition)’ then click on Next button
5. By default all the mailbox items will select; don’t do any changes just click on the Next button
6. After that a page will appear on screen, Select the identity created most recently from there and click to Next button then, click on OK
7. This process will import your mailbox data from Exchange Server and you will receive the message ‘Microsoft Outlook wants to use your confidential information stored in “Exchange” in your key chain’. Click on Always Allow button
8. With this, you are done importing the .RGE file into Outlook 2011.
9. Lastly, click on Finish button to close it
Now you can read/write at your Entourage mailbox in Outlook for Mac 2011.