I have a large archive of emails in Thunderbird on my XP Vaio laptop. How do I shift them all to my new Mac Book Air? I tried following the instructions, which sent me to this section: How to find your profile Click on the menu button or menu bar. From the Help menu, click Troubleshooting Information. In the Application Basics section, Profile Folder, click on Show Folder . The Windows Explorer window will show the name of the profile as well as the path to it. -- However, there is no Troubleshooting information on the Help menu. So I am stuck.