I have got problem to create Session Bean

Hi
I am new in j2ee. I have installed the eclipse 3.1, j2sdk1.4.2_07 and tomcat 5.0. I have created a ejb with a session bean and it gives me a error the program doesn't find the class javax.ejb.SessionBean. My question is Can this error happen because I don't have installed J2EE 1.4 SDK and Sun Java System Application Server Platform Edition 8.1?
thank you

Hi
I have tried to put the classpath with j2ee in eclipse but it happens the same. it doesn't find the package javax.ejb.SessionBean.
I am going to explain i have done from the beginning. Maybe I am wrong in something. I think which is that.
I have create a proyect with Dynamic Web Proyect after i create a proyect with ejbModule. I attempt to create a file with session bean. In last proyect acceded to Run->Run here i select Apache Tomcat and Tomcat v5.0 Server _ localhost and i select the classpath in "bootstrap entries" i insert the file j2ee.jar. And I' ve got the same error.
is it fine? I am bored trying to find the problem.
thanks in advanced

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    --ken                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

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