Building IBM Lotus Sametime on top of Lotus Expeditor lets you <A HREF="http://www.ibm.com/developerworks/lotus/library/sametime-eclipse-pt1/index.html?ca=drs-">use Eclipse as a Plug-in Development Environment</A> to extend Lotus Sametime's functionality in many ways. This article, part 1 of a four-part series, explains the configuration steps to use Eclipse as a PDE for Lotus Sametime.