Your operating system must use the 1.5 or above version of Java. If not, please visit the Java web page (http://java.sun.com/) and install the latest version of Java.
Eclipse must be installed. We currently use Eclipse 3.5.0 (Galileo). You can get Eclipse from http://www.eclipse.org/downloads/.
In this tutorial, you should download the Eclipse Modeling Tool version of Eclipse which is a good base for development with Kermeta. This tutorial will cover every necessary step to get Kermeta working with Eclipse.
Some additional installation instructions are available here : http://www.eclipse.org/documentation/ .