How to Add this code to my front page

Hope someone can help here
this is my index page

<?php
include("config.php"); 
$keyword2=str_replace (" ", "+", $keyword);

$f = "http://news.search.yahoo.com/search/news?p=$keyword2&ei=UTF-8";


// Make sure that SimplePie is loaded
require_once('simplepie.inc');
include("header.php"); 

$feedvariable = htmlspecialchars($f);
		
// Initialize new feed
$feed = new SimplePie($f);

$feed->init();
 

// Loop through all of the items in the new array and display whatever we want.

foreach($feed->get_items() as $item) 
{
	echo '<h4><a href="' . $item->get_link() . '" rel="shadowbox">' . $item->get_title() . '</a></h4>'	;
	echo '<p>';
	echo $item->get_description();
	echo '</p><br />';




}


include("footer.php"); 

?>

PHP:

I want to add an amazon store code into it like
http://astore.amazon.com/97dollarsites-20

I'm not sure how to add it as it doesn't show up when I do..
any help - thanks