Take a look at these links: http://plato.acadiau.ca/courses/comp/dsilver/2513/EclipseAndTomcatTutorial/
http://www.keyboardsamurais.de/2004/01/15/tomcat_tutorial_helloworld_for_complete_fools_-_english/
http://www-128.ibm.com/developerworks/opensource/library/os-ectom/?ca=dgr-lnxw16EclipsTomcat
I've found going through tutorials is a proven, quick way of getting up to speed with new tools and configurations.
HTH,
James