InfoWorld tests four enterprise instant messaging systems: Lotus Instant Messaging and Web Conferencing 3.1, Microsoft Live Communications Server 2003, Novell GroupWise Messenger 1.0, and Jabber XCP (Extensible Communications Platform) 2.7 - and finds that enterprise IM solutions provide the security, manageability, and auditing capabilities that companies need. Instant messaging is all grown up and ready for the workplace.