use the Jboss as 4.2.2 , and following the readme.txt.
So,
where can i get the jar file which contain the org/jboss/resource/adapter/jdbc/ValidConnectionChecker class.

2008-04-11 15:23:00,547 DEBUG [org.hibernate.jdbc.ConnectionManager] opening JDBC connection
2008-04-11 15:23:00,547 WARN  [org.jboss.resource.connectionmanager.JBossManagedConnectionPool] Throwable while trying to match ManagedConnection, destroying connection: org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener@1589559[state=NORMAL mc=org.jboss.resource.adapter.jdbc.local.LocalManagedConnection@103b97 handles=0 lastUse=1207898566051 permit=false trackByTx=false mcp=org.jboss.resource.connectionmanager.JBossManagedConnectionPool$OnePool@1b8378f context=org.jboss.resource.connectionmanager.InternalManagedConnectionPool@147cab0 xaResource=org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@4c19ae txSync=null]
java.lang.NoClassDefFoundError: org/jboss/resource/adapter/jdbc/ValidConnectionChecker
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:219)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:300)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:289)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1273)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
        at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:443)
        at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.checkValid(BaseWrapperManagedConnection.java:231)
        at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.matchManagedConnections(LocalManagedConnectionFactory.java:200)
        at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.getConnection(InternalManagedConnectionPool.java:211)
        at org.jboss.resource.connectionmanager.JBossManagedConnectionPool$BasePool.getConnection(JBossManagedConnectionPool.java:538)
        at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:341)
        at org.jboss.resource.connectionmanager.TxConnectionManager.getManagedConnection(TxConnectionManager.java:315)
        at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:396)
        at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842)
        at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88)
        at org.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:69)
        at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
        at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
        at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
        at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
        at org.hibernate.loader.Loader.doQuery(Loader.java:673)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
        at org.hibernate.loader.Loader.doList(Loader.java:2220)
        at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2136)
        at org.hibernate.loader.Loader.list(Loader.java:2096)
        at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
        at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
        at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
        at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
        at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
        at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:82)
        at org.jboss.seam.wiki.core.dao.UserRoleAccessFactory.getGuestUser(UserRoleAccessFactory.java:25)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
        at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
        at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:46)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
        at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
        at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
        at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
        at org.jboss.seam.wiki.core.dao.UserRoleAccessFactory_$$_javassist_26.getGuestUser(UserRoleAccessFactory_$$_javassist_26.java)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
        at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:125)
        at org.jboss.seam.Component.callComponentMethod(Component.java:2082)
        at org.jboss.seam.Component.getInstanceFromFactory(Component.java:1926)
        at org.jboss.seam.Component.getInstance(Component.java:1863)