generating pie charts in php using the libcart package

[k prathapreddy]

for the following code it gives anerror as "Fatal error: Class 'PieChart' not found in C:\xampp\htdocs \n1.php on line 5" even incuding the classes itshows anerror as" Warning: include(C:\xamp p\htdocs\libcha rt\classes): failed to open stream: Permission denied in C:\xampp\htdocs \n1.php on line 3

Warning: include(): Failed opening 'libchart/classes' for inclusion (include_path=' .;C:\xampp\php\ PEAR') in C:\xampp\htdocs \n1.php on line 3

Fatal error: Class 'PieChart' not found in C:\xampp\htdocs \n1.php on line 4",pls give the solution to fix errors.

<?php
include "libchart/libchart.php";

	$chart = new PieChart(500, 250);

	$dataSet = new XYDataSet();
	$dataSet->addPoint(new Point("Mozilla Firefox (80)", 80));
	$dataSet->addPoint(new Point("Konqueror (75)", 75));
	$dataSet->addPoint(new Point("Other (50)", 50));
	$chart->setDataSet($dataSet);

	$chart->setTitle("User agents for www.example.com");
	$chart->render("generated/demo3.png");
?>