Hi, The following is the Ant 1.3 build.xml for Ozone. It includes 5 build.xml: main one for ozone and the other 4 for samples. They have been tested with the current CVS version of Ozone. All build.xml files create a directory called ant.build and put all the generated files in this directory including opp, castor, and compiled classes. David Li DigitalSesame