Hi, I am now using jakarta-tomcat-5.0.14 to testServlet 2.4 and JSP 2.0 features. But do anyone know how to integrate Tomcat with JBuilder? I tried to copy the existing server configuration, which is Tomcat 4.1 in JBuilder, and reconfigured it. However, it seems helpless! The server stopped without any error messages, even a single printed information. The following is the copied command line appeared in JBuilder when starting Tomcat 5! C:\JBuilder9\jdk1.4\bin\javaw -classpath "C:\jakarta-tomcat-5.0.14\bin\bootstrap.jar;C:\JBuilder9\jdk1.4\lib\tools.jar" -Dcatalina.home="C:/jakarta-tomcat-5.0.14" org.apache.catalina.startup.Bootstrap -config "C:\Documents and Settings\yanmin.shi\jbproject\web-test\Tomcat\conf\server8080.xml" start I really appreciate your help. Thanks in advance.