You need to copy these jars into eclipse/plugins directory (under Eclipse 3.3 - Europa):

com.seisw.util.geom.gpcj_1.0.0.jar
cz.cuni.amis.pogamut.core_3.0.0.jar
cz.cuni.amis.pogamut.edu.core_1.0.0.jar
cz.cuni.amis.pogamut.edu.edumapeditor_1.0.0.jar
cz.cuni.amis.pogamut.jars_1.0.0.jar
cz.cuni.amis.pogamut.scenarioaddons_1.0.0.jar
cz.cuni.amis.pogamut.ut2004.scenarioaddons_1.0.0.jar
cz.cuni.amis.pogamut.ut2004_3.0.0.jar
org.drools.jars_1.0.0.jar

They can be downloaded from http://www.springsource.com/repository/app/bundle?query=D