I tried building the server config "chap3" as per instructions on Page 125 of "Admin Devel Guide for 3.0.4" documentation. If you start hte server after doing the ant task with "run -c chap3" it would show an incomplete deployment saying Jbossweb is not registered. The reason in my case was that the jetty jar files were not copied to the jbossweb.sar as part of the build.xml, i had to move those jar files to the jbossweb.sar and it deployed fine after that.

Just in case, someone has the same issue!!!!