Servlet not found, Tomcat 4.1

This problem is a common one, I know, but I've tried everything to get it to work and it hasn't. The problem is that Tomcat can't find a servlet I've made when I ask for it via an HTML form or even through a direct request in my browser. No matter what, I get "The requested resource is not available", though if I place my servlet in the examples\WEB-INF\classes directory, it works fine.
I have this folder structure:
webapps
--onjava
----WEB-INF
------classes
------lib
JSP files are in \onjava, the compiled servlet (login.class) is in \onjava\WEB-INF\classes.
I've added the following to my server.xml file:
<Context path="/onjava" docBase="onjava" debug="0" reloadable="true"/>
My web.xml file:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>login</servlet-name>
<servlet-class>login</servlet-class>
</servlet>
</web-app>
I should be able to access my servlet directly by using the URL:
http://serv2.ischool.washington.edu:8080/onjava/servlet/login
correct? Yeah, that's what I thought too. But no.
I'd give you my servlet code too, but I don't think it will help...it's not in any packages, it's just a standard servlet. I'm trying to do the tutorial at http://www.onjava.com/pub/a/onjava/2001/04/19/tomcat.html?page=1 , if you need extra info.
Any help would be greatly appreciated!
Thanks,
Matt

Put this in web.xml and you should be fine
<servlet>
<servlet-name>login</servlet-name>
<servlet-class>login</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>/servlet/login</url-pattern>
</servlet-mapping>

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