Novo erro com hibernate

08/06/2004 16:46:45 net.sf.hibernate.cfg.Environment <clinit>

INFO: Hibernate 2.1.4

08/06/2004 16:46:45 net.sf.hibernate.cfg.Environment <clinit>

INFO: loaded properties from resource hibernate.properties: {hibernate.connection.username=SYSDBA , hibernate.connection.password=chavep , hibernate.cglib.use_reflection_optimizer=true, hibernate.dialect=net.sf.hibernate.dialect.FirebirdDialect , hibernate.connection.url=jdbc:firebirdsql://localhost:3050/D:/Desenvol/Java/Cimo/Implementacao/Dados/CIMO.GDB , hibernate.connection.driver_class=org.firebirdsql.jdbc.FBDriver }

08/06/2004 16:46:45 net.sf.hibernate.cfg.Environment <clinit>

INFO: using CGLIB reflection optimizer

08/06/2004 16:46:45 net.sf.hibernate.cfg.Configuration addFile

INFO: Mapping file: JMGrupo.hbm.xml

08/06/2004 16:46:46 net.sf.hibernate.cfg.Binder bindRootClass

INFO: Mapping class: JMGrupo -> GRUPO

08/06/2004 16:46:46 net.sf.hibernate.cfg.Configuration secondPassCompile

INFO: processing one-to-many association mappings

08/06/2004 16:46:46 net.sf.hibernate.cfg.Configuration secondPassCompile

INFO: processing one-to-one association property references

08/06/2004 16:46:46 net.sf.hibernate.cfg.Configuration secondPassCompile

INFO: processing foreign key constraints

08/06/2004 16:46:46 net.sf.hibernate.cfg.SettingsFactory buildSettings

WARNING: No dialect set - using GenericDialect: Dialect class not found: net.sf.hibernate.dialect.FirebirdDialect

08/06/2004 16:46:46 net.sf.hibernate.dialect.Dialect 

INFO: Using dialect: net.sf.hibernate.dialect.GenericDialect

08/06/2004 16:46:46 net.sf.hibernate.cfg.SettingsFactory buildSettings

INFO: Use outer join fetching: false

08/06/2004 16:46:46 net.sf.hibernate.connection.DriverManagerConnectionProvider configure

INFO: Using Hibernate built-in connection pool (not for production use!)

08/06/2004 16:46:46 net.sf.hibernate.connection.DriverManagerConnectionProvider configure

INFO: Hibernate connection pool size: 20

08/06/2004 16:46:46 net.sf.hibernate.connection.DriverManagerConnectionProvider configure

SEVERE: JDBC Driver class not found: org.firebirdsql.jdbc.FBDriver

08/06/2004 16:46:48 net.sf.hibernate.connection.DriverManagerConnectionProvider close

INFO: cleaning up connection pool: null