The knowledge you need isn't always esoteric; sometimes it's just hard to find. The Real Deal gives you access to secrets and info that will help you master the confusing world of technology. Every Tuesday Tom and Rafe take on a new topic as well as taking your e-mail. Send Tom and Rafe e-mail at realdeal@cnet.com or call them at 1-877-600-2638 (CNET). Read more on Last.fm