For the last several years, video and voice conferencing over IP networks has been emerging as a flexible and unique communication tool with many uses in research and education as well as the corporate sector. But IP conferencing remains a moving target in terms of the "what, when and how" of introducing, purchasing and supporting an implementation. Technologies of choice change and diversify even as the definition of "conferencing" is shifting towards a multi-media concoction of audio, video and data. Since its initial availability in 1998, the ViDe Video Conferencing Cookbook has been enriched through the collaboration of multiple content experts to produce an invaluable resource for those who need to know *today* how to use and support IP conferencing. In its fourth edition, the Cookbook continues to expand its mission of providing sound and timely technical information in a useful and user-friendly way.
