Need some one to fix a magento extension

There is this magneto extension, and i want it fixed, it needs to be updated with new amazon api rules, and then be checked to make sure it works properly:

<?php
/**
*
* AWS_Cart 0.0.1 - November 2008
* Copyright (C) awsfm.com
* AWS_Cart is licensed under a Creative Commons License
*
*/

include('config.php');

function priceCheck($id,$sku,$price,$type){
	$request = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=ItemLookup&ItemId=$sku&ResponseGroup=Medium,Offers";
	$session = curl_init($request);
	curl_setopt($session, CURLOPT_HEADER, false);
	curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
	$response = curl_exec($session);
	$response = file_get_contents($request);
	$parsed_xml = simplexml_load_string($response);
	$awsListPrice=$parsed_xml->Items->Item->ItemAttributes->ListPrice->FormattedPrice;
        $awsListPriceDB=substr_replace($parsed_xml->Items->Item->ItemAttributes->ListPrice->Amount, '.', -2, 0);        
        $awsOfferListPrice=$parsed_xml->Items->Item->Offers->Offer->OfferListing->Price->FormattedPrice;
        $awsOfferListPriceDB=substr_replace($parsed_xml->Items->Item->Offers->Offer->OfferListing->Price->Amount, '.', -2, 0);
	if($type=='regular'){
		if($awsListPrice!=$price){
                  $con = mysql_connect(dbhost,dbuser,dbpass);
                  mysql_select_db(dbname,$con);
                  mysql_query("UPDATE catalog_product_entity_decimal SET value=$awsListPriceDB WHERE entity_id=$id AND attribute_id='99'");
                  mysql_close($con);		
	          print $awsListPrice;
		}else{
                  print $price;
}
	}
	if($type=='final'){
		if($awsOfferListPrice!=$price){
                  $con = mysql_connect(dbhost,dbuser,dbpass);
                  mysql_select_db(dbname,$con);
                  mysql_query("UPDATE catalog_product_entity_decimal SET value=$awsOfferListPriceDB WHERE entity_id=$id AND attribute_id='567'");
                  mysql_close($con);	
		  print $awsOfferListPrice;
		}else{
                  print $price;
}
	}
}

function priceCheckCheckout($id,$sku,$price){
	$request = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=ItemLookup&ItemId=$sku&ResponseGroup=Medium,Offers";
	$session = curl_init($request);
	curl_setopt($session, CURLOPT_HEADER, false);
	curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
	$response = curl_exec($session);
	$response = file_get_contents($request);
	$parsed_xml = simplexml_load_string($response);
	$awsListPrice=$parsed_xml->Items->Item->ItemAttributes->ListPrice->FormattedPrice;
        $awsListPriceDB=substr_replace($parsed_xml->Items->Item->ItemAttributes->ListPrice->Amount, '.', -2, 0);        
        $awsOfferListPrice=$parsed_xml->Items->Item->Offers->Offer->OfferListing->Price->FormattedPrice;
        $awsOfferListPriceDB=substr_replace($parsed_xml->Items->Item->Offers->Offer->OfferListing->Price->Amount, '.', -2, 0);
		if($awsOfferListPrice!=$price){
                  $con = mysql_connect(dbhost,dbuser,dbpass);
                  mysql_select_db(dbname,$con);
                  mysql_query("UPDATE catalog_product_entity_decimal SET value=$awsOfferListPriceDB WHERE entity_id=$id AND attribute_id='567'");
                  mysql_close($con);	
        }
}

function itemLookup($sku, $qty){
     $request = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=ItemLookup&ItemId=$sku&ResponseGroup=Medium,Offers";
     $session = curl_init($request);
     curl_setopt($session, CURLOPT_HEADER, false);
     curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
     $response = curl_exec($session);
     $response = file_get_contents($request);
     $parsed_xml = simplexml_load_string($response);
     $offerListingId = urlencode($parsed_xml->Items->Item->Offers->Offer->OfferListing->OfferListingId);
     cartCreate($offerListingId, $qty);
}

function cartCreate($offerListingId, $qty){
     $request = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=CartCreate&Item.1.OfferListingId=$offerListingId&Item.1.Quantity=$qty";
     $session = curl_init($request);
     curl_setopt($session, CURLOPT_HEADER, false);
     curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
     $response = curl_exec($session);
     $response = file_get_contents($request);
     $parsed_xml = simplexml_load_string($response);
     showCartContents($parsed_xml);
}

function itemLookupAdd($sku, $qty, $cart, $hmac){
     $request = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=ItemLookup&ItemId=$sku&ResponseGroup=Medium,Offers";
     $session = curl_init($request);
     curl_setopt($session, CURLOPT_HEADER, false);
     curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
     $response = curl_exec($session);
     $response = file_get_contents($request);
     $parsed_xml = simplexml_load_string($response);
     $offerListingId = urlencode($parsed_xml->Items->Item->Offers->Offer->OfferListing->OfferListingId);
     cartAdd($offerListingId, $qty, $cart, $hmac);
}

function cartAdd($offerListingId, $qty, $cart, $hmac){
     $request="http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=".KEYID."&AssociateTag=".AssocTag."&Version=2006-09-11&Operation=CartAdd&CartId=$cart&HMAC=$hmac&Item.1.OfferListingId=$offerListingId&Item.1.Quantity=$qty";
     $session = curl_init($request);
     curl_setopt($session, CURLOPT_HEADER, false);
     curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
     $response = curl_exec($session);
     $response = file_get_contents($request);
     $parsed_xml = simplexml_load_string($response);
     showCartContents($parsed_xml);
}

function showCartContents($parsed_xml){
     global $checkout;
     global $CartId;
     global $HMAC;
     $checkout = $parsed_xml->Cart->PurchaseURL;
     $CartId = $parsed_xml->Cart->CartId;
     $HMAC = $parsed_xml->Cart->URLEncodedHMAC;
}
?>

PHP:

please post me your price