Newbie problems, Tomcat 4.1 not seeing package

Hello,
New to the whole jsp development scene and I seem to be tripping up on the first hurdle. Any one with a few minutes and some patience to point me in the right direction would be greatly rewarded in the afterlife : )
I have created 2 class files and compiled them in their package folder "shopengine".
My directory structure for my TomCat 4.1 website is shown here:
C:\Tomcat 4.1\webapps\ROOT\aardvark\WEB-INF\classes\com\shopengine
where aardvark is my main site folder that contains all my jsp and html content.
As per convention, I have put to denote that they are contained in a folder called shopengine, within a folder called com.
I then created a simple jsp page named testpage.jsp in NetBeans 3.5.1, (see code below) and I built and compiled the page with no errors showing.
When I open the page in my browser with TomCat running I get a message indicating that my package don't exist. - see below.
There must be something I am not doing here that is completely missing me as everything seems to be correct.
I have mounted the filesystem in NetBeans, but I have not turned it into a web module, is that what is wrong?
<%@ page contentType="text/html; charset=iso-8859-1" language="java" %>
<%@ page import="java.sql.*, java.util.*, com.shopengine.*" errorPage="errorpage.jsp" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
</head>
<body>
<p>This is a test page to see if the classes importing from package</p>
</body>
</html>
Tomacat error as shown below:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
C:\Tomcat 4.1\work\Standalone\localhost\_\aardvark\testpage_jsp.java:9: package com.shopengine does not exist
import com.shopengine.book;
^
1 error
-----------------------------------------------------------------------------------------------------------------------------

Don't put the aardvark directory under ROOT; put it directly under TOMCAT_HOME/webapps.
The URL to invoke your app will be:
http://localhost:8080/aardvark/YourJSP.jsp
Don't forget to restart Tomcat after you've moved everything.

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Missing in this equation were the version of Premiere Elements that you were using and the computer operating system on which it was running. But...
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