This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
I am not sure but i think this link might be of interest to you. It says it adds support for websphere 6.0 sever (among others) to netbeans ide so i assume that it will provide websphere specific ejb-jar and web xml configurations too.