java.lang.NoClassDefFoundError: org/odmg/DCollection

I have download hibernate synchroinizer and installed it on eclipse eclipse-SDK-3.0M9-win32, then made all the xml, and java files,and a small program with main, but when I luanched my main class I get the following error, i have hibernate.jar in the class path.
please help.

java.lang.NoClassDefFoundError: org/odmg/DCollection
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at net.sf.hibernate.type.TypeFactory.set(TypeFactory.java:198)
at net.sf.hibernate.mapping.Set.getCollectionType(Set.java:29)
at net.sf.hibernate.mapping.Collection.getType(Collection.java:275)
at net.sf.hibernate.cfg.Binder.bindProperty(Binder.java:443)
at net.sf.hibernate.cfg.Binder.createProperty(Binder.java:1070)
at net.sf.hibernate.cfg.Binder.propertiesFromXML(Binder.java:1050)
at net.sf.hibernate.cfg.Binder.bindRootClass(Binder.java:361)
at net.sf.hibernate.cfg.Binder.bindRoot(Binder.java:1243)
at net.sf.hibernate.cfg.Configuration.add(Configuration.java:249)
at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:285)
at net.sf.hibernate.cfg.Configuration.addClass(Configuration.java:351)
at src.test.main(test.java:28)
Exception in thread "main"

Read the documentation and lib/README file and copy all required 3rd party libraries.