RemoteGroupCacheServerFactory problem

hi,
   Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/jcs/auxiliary/remote/server/group/RemoteGroupCacheServerFactory.

 for the above problem i went to the respective folder to find
RemoteGroupCacheServerFactory.But i was not able to find it.i went to the
cvs and try to get it.but it was not available.

regards
                                                                       guru