Deploying to shared tomcat instance

Hi All
I'm new to servlet, and even newer to Creator. I'm trying to deploy a relatively simple two page application (Compiles and deploys with no problem locally on sun app server) to a shared instance of tomcat. This means that I can't simply send over the WAR file and the the jstl.jar and standard.jar files, but i have to copy the class files directly into the remote ~/public_html/WEB-INF/classes/ dir. what i've done is basically copied the entire local /build/web/ directory into my public_html directory. All dependant libraries and (i think)xml config files are in the correct places. When I try to get to the app I get redirected to a page with a null pointer exception originating at the constructor of the Page1 of the app (bottom of page). Where (Page1.java:166) is the constructor of the main page of the app. I'm guessing that its something that I'm missing in the xml config files which are simply the ones generated by creator.
Thanks in advance for any help.
andy
java.lang.NullPointerException
     com.sun.rave.web.ui.appbase.AbstractPageBean.<init>(AbstractPageBean.java:85)
     pnp_census.Page1.<init>(Page1.java:166)
     sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     java.lang.reflect.Constructor.newInstance(Constructor.java:494)
     java.lang.Class.newInstance0(Class.java:350)
     java.lang.Class.newInstance(Class.java:303)
     org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:369)
     org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:133)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

Going through the code, I'm seeing that the exception is being thrown here: in the constructor of AbstractPageBean (Super of Page1) :
Map map = FacesContext.getCurrentInstance().getExternalContext().getRequestMap();
Does anybody have any Idea which xml conf file may effect this? or why it would be different between SunAppServer and Tomcat?
Thanks

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