i had install jboss 3.0.0 with embedded tomcat 4.0.3 version my ejb's and jsp for sample application is working fine.
Now my aim is to create a context outside jboss inside tomcat since his version does not read server.xml i wonder where i can create a context.
Have you considered the application.xml of your ear file which allows you to specify the context-root (e.g. /root)? Check out ant's ear target. Or if you mean context parameters the web.xml which goes in your war's Web-inf directory.
Hope it helps,