If I have installed jdk1.3 and want use ejb do I need some more to download

I am trying to run some ejb classes using jboss but it complains EJBOBJECt not found. What does this mean?Please help
[145 byte] By [jii3] at [2007-9-26 4:30:14]
# 1
Have you downloaded J2ee?
GLJdotcom at 2007-6-29 17:42:29 > top of Java-index,Archived Forums,Java Programming...