Manually Install Thunderbird 2 : Ubuntu 9.04

   1. Download Thunderbird 2. (Save to disk)
   2. sudo tar -C /opt -zxvf ~/Desktop/thunderbird-*
   3. sudo ln -s /opt/thunderbird/thunderbird /usr/local/bin/thunderbird
   4. create a menu item: sudo gedit /usr/share/applications/thunderbird.desktop

    [Desktop Entry]
    Encoding=UTF-8
    Name=Thunderbird
    Comment=Thunderbird Mail Client
    Exec=thunderbird
    Icon=/opt/thunderbird/icons/mozicon16.xpm
    StartupNotify=true
    Terminal=false
    Type=Application
    Categories=Applications;Network