you might be aware of the fact that WTE(Websphere Test Environment) is a subset of WAS.
when you start the WTE , it checks for three files
1) default.servlet_engine
2) appName.webapp
3) session.xml
you will not require changes in session.xml, while developing a simple application
anyways you define all the applications, in default.servlet_engine...
this is just like server.xml for tomcat. I mean properties file for servlet engine.
this is not application specific...
here is an example for you.
<websphere-webgroup name="check1">
<description>check1</description>
<document-root>$approot$/web</document-root>
<classpath>$approot$/servlets$psep$$server_root$/servlets</classpath>
<root-uri>/check1</root-uri>
<auto-reload enabled="true" polling-interval="3000"/>
<shared-context>false</shared-context>
</websphere-webgroup>
I'm not sure , but according to me the "server_root" is set when we install the VAJ
for this example as <root-uri> is /check1
so to run index.html in check1 you will specify
http://localhost:8080/check1 and there should be a properties file named "check1.weapp" in folder /check1/servlet/
where you need to define all the servlets
this file is similar to web.xml in tomcat
<servlet>
<name>MainServlet</name>
<description>Main Servlet</description>
<code>com.check1.common.MainServlet</code>
<servlet-path>/MainServlet</servlet-path>
<autostart>true</autostart>
</servlet>
hope this helps...