Java EE (Java Enterprise Edition) General Discussion

Hi,
I am trying to run one of the examples in the JWS tutorial, but everytime I go "ant build" it throws the following error

<stuff_up_front>/jaxrpc/common/targets.xml:30: taskdef class org.apache.catalina.ant.DeployTask cannot be found

As far as I know I have all the necessary path and environmental variable set. Only thing I can think of is that I choose not to install the Tomcat that comes bundled with the JWSDP package since I already had tomcat server running on my machine. But my Catalina_Home has been set from a long time and it works with other applications. So I really not sure what I am suppose to do. Help would be very welcomed. Thansk you.