The required libraries should be placed here. The dependencies are: xerces.jar - required for building Ant and other various things http://xml.apache.org/xerces-j/ junit.jar - required for junit tasks, available at www.junit.org stylebook.jar - required by stylebook task, available in CVS repository of xml.apache.org testlet.jar - required for test task, available with Avalon via java.apache.org/framework jakarta-regexp-1.1.jar - required by some mappers, available at http://jakarta.apache.org/regexp/ ???oro.jar??? - required for some mappers, available at http://jakarta.apache.org/oro/ ???antlr.jar???- required for antlr task, available at www.antlr.org bsf.jar - required for script task, available at http://oss.software.ibm.com/developerworks/opensource/bsf/ netrexx.jar - required for netrexx task, available at http://www2.hursley.ibm.com/netrexx rhino.jar - required for script task if you want to use javascript, available at www.mozilla.org jpython.jar - required for script task if you want to use python, available at www.jpython.org netcomponents.jar - required by ftp task, available at http://www.savarese.org/oro/downloads/index.html#NetComponents