Delete Junk Messages Older Than," and then enter the desired interval. The default interval is 2 weeks. 5. Click OK to save your changes.           Getting Additional Help with Thunderbird To keep a tight focus on Firefox in this book, I cut the Thunderbird discussion short here. However, if you like what you see so far, here are three great (and free) online resources: Official Thunderbird Help: The Mozilla Foundation's official Thunderbird support page, offering links to a Frequently Asked Questions (FAQ) page, free online support forums, and a list of tips and tricks. You can reach this page easily by choosing Help Mozilla Thunderbird Help in Thunderbird. http://www.mozilla.org/support/thunderbird An Introduction to Thunderbird: A wonderfully thorough, screenshot-laden online walkthrough of Thunderbird, beginning with installation. http://opensourceartiles.com/introduction_to_thunderbird Harvard's Thunderbird Help Center: Offers helpful tutorials for each of Thunderbird's primary features, with screenshots. http://www.fas.harvard.edu/computing/thunderbird/help           Chapter 11: Downloading and Saving Files Overview The Internet is one of the most impressive engineering feats in human history, but it's also the largest wasteland ever created. Scattered carelessly across space and time, the Internet epitomizes mankind's tendency toward clutter. It is the collective closet of billions of people worldwide, and it's a mess. Just put those shoes anywhere. But if that's the Internet's curse, that's also its charm. Because unlike your own closets, the mess that is the Internet is Someone Else's Problem. You fire up your browser and take what you need, and at the end of the day, you just shut it down. It's only after you download stuff from the Internet to your computer that the clutter becomes your problem, and unfortunately, most browsers do little to temper it. Even the most casual downloaders soon find themselves over-whelmed with scattered files. The Firefox Download Manager is designed to help you organize and open the files you download so you don't have to spend your time searching for them. In other words, you can rest easy: Even your own clutter is now someone else's problem.