Follow the instructions at http://www.maiden-world.com/dchub.html to configure and install DC. If you have any problems getting connected, check the FAQ in that document: http://www.maiden-world.com/dchub.html#faq . After you're online, simply hit CTRL+S (View > Search) and type what you're looking for. Or right-click on a user who's sharing some things, and click "Get file list" to see what they have.