Tip: Using Google Calendar to Connect Thunderbird to BlackBerry
Next, you need to download Google Sync to your BlackBerry. Here are Google's step-by-step instructions for downloading and installing it.
With both Thunderbird and BlackBerry now regularly syncing with Google, you can access and edit your calendar from either one-or from any device that gives you Web access to Google-and everything stays organized. If you want, you can also share your Google calendar with other users and elect whether you want their calendars to show up on your Thunderbird or your BlackBerry.