These days you can practically count on several presenters needing access to the Internet. But when the hotel starts going on about, say, its Internet service provider's DSL system delivering 416 Kbps bandwidth, it's time to take charge. Is DSL enough bandwidth? Is it too much? Is it the right kind of DSL? To make smart buying decisions, you need to understand your Internet access options, but perhaps more important, you need to start by knowing what you need.