help getting castor to work

I have the following problem trying to get castor to work. When I
compile a
program called castor, I get the error message "org.exolab.castor.xml
does not exist".

REM setJava.bat
set JAVA_BASE=C:\users\office\Desktop\Javalib\castor-1.2
set JAVA_HOME="C:\Program Files\Java"
set XERCES_HOME=%JAVA_BASE%\lib\xerces-J_1.4.0
set CASTOR_HOME=%JAVA_BASE%\castor-1.2
set CASTOR_CLASSES=%CASTOR_HOME%\lib\castor-1.2.jar;%CASTOR_HOME%\lib
\castor-1.2-xml.jar;%CASTOR_HOME%\lib\xerces-J_1.4.0.jar;%CASTOR_HOME%
\lib\commons-logging-1.1.jar;
-------------------------------------------------------
package mypackage1;
import java.io.StringReader;
import org.exolab.castor.xml.MarshalException;
.....

public class Tester {

   public static void main(String[] args) {
      String xml = "<DataBean><value1>foo</value1></DataBean>";
      StringReader sr = new StringReader(xml);
      InputSource is = new InputSource(sr);
      Unmarshaller um = new Unmarshaller();
      try {
         DataBean dataBean = (DataBean)um.unmarshal(DataBean.class,
is);
         System.out.println("value1 is " + dataBean.getValue1());
      }
      catch (MarshalException e) {
         e.printStackTrace();
      }
      catch (ValidationException e) {
         e.printStackTrace();
      }
   }
}

How do I make my windows system recognize the castor libraries?

Thanks.