How to connect JBoss with Tomcat?

[cocofrance]

please help.

when i try to access a servlet
i have this this excpetion :

java.lang.NoClassDefFoundError: org/jboss/tm/TransactionPropagationContextUtil
 org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.getTransactionPropagationContext(JRMPInvokerP
roxy.java:92)
 org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:109)
 org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:227)
 org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:167)
 org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
 org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
 org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:169)
 org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
 $Proxy2.create(Unknown Source)

what i have to do?

thanks