I doesn't know if this is true, but after I try the example from Sun J2ee example and creating the EAR, it's not compatible if we use this EAR in the orion, and it also the same if we are using the orion EAR and try open it using the sun j2ee deploytool. >From what I read the EAR should be a standard so that other Vendor EAR(EJB) can be used easily in other Vendor OAS. A lot of modification have to be done so that you can port the EAR to other OAS I try assemble the lesson 1 (bonus calculation) from sun j2ee using the method used to assembled the orion-primer examples, however I'm not quite succesfull in doing that. When I try to invoke the url localhost/orion-calc/bonus.html, it's not the html that get executed, but the servlet it self. I think the guy who done the orion-primer think should extend the example so that the HelloServlet can be accessed via an html file (through a get method) and show us the exact build.xml to include the html file of the servlet rosely kumoi