Magento Checkout，尝试创建一个免费产品的新模块

我正在尝试创建一个新的模块来绕过免费下载产品的结帐过程。因为我不是一个开发人员，我需要一些帮助与模块的xml文件。

我有这样的文件夹结构:

应用程序/etc/模块/Fe_Freecheckout.xml

app/代码/地方/Fe/Freecheckout/控制器/CheckoutController.php应用程序/代码/地方/Fe/Freecheckout/etc/config . xml

这些是文件的内容:

CheckoutController.php

<?php
public function purchaseAction() {
if (!Mage::getSingleton('customer/session')->isLoggedIn()) {
        $this->_redirectUrl(Mage::getBaseUrl().'customer/account');
        return;
 }
 $request = $this->getRequest();
 $id = $request->getParam('id');
 $product = Mage::getModel('catalog/product')
                ->load($id)
                ->setStoreId(Mage::app()->getStore()->getId());
 if(!($product->getIsVirtual() && $product->getFinalPrice() == 0)){
     Mage::getSingleton('checkout/session')->addError($this->__('Method only available for Free Downloadable Items'));
     return $this;
 }
 $onepage = Mage::getSingleton('checkout/type_onepage');
 /* @var $onepage Mage_Checkout_Model_Type_Onepage */
 try{
     $quote = $onepage->getQuote();
     /* @var $quote Mage_Sales_Model_Quote */
     $quote->addProduct($product);
     Mage::getSingleton('checkout/session')->setCartWasUpdated(true);
     $onepage->initCheckout();
     $payment=array('method'=>'free');
     $onepage->savePayment($payment);   
     $onepage->saveOrder();
     $this->getResponse()->setRedirect('/downloadable/customer/products');
 }
 catch(Exception $e){
     $result = $e->getMessage();
     Mage::getSingleton('checkout/session')->addError($result);
 }
 }
 ?>

应用程序/etc/模块/Fe_Freecheckout.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Fe_Freecheckout>
            <!-- Whether our module is active: true or false -->
            <active>true</active>
            <!-- Which code pool to use: core, community or local -->
            <codePool>local</codePool>
        </Fe_Freecheckout>
    </modules>
</config>

这是app/code/local/Fe/freecheck/etc/config.xml我不知道如何注册我的checkout控制器:

<?xml version="1.0" encoding="UTF-8"?>
<!-- The root node for Magento module configuration -->
<config>
    <!--
        The module's node contains basic
        information about each Magento module
    -->
    <modules>
        <!--
            This must exactly match the namespace and module's folder
            names, with directory separators replaced by underscores
        -->
        <Fe_Freecheckout>
            <!-- The version of our module, starting at 0.0.1 -->
            <version>0.0.1</version>
        </Fe_Freecheckout>
    </modules>
</config>

然后在product/view中。我使用以下代码进行签出:

<?php if($_product->isVirtual() && $_product->getFinalPrice()==0) { ?>
                <a href="/Freecheckout/checkout/purchase/id/<?php echo $_product->getId()?>"><?php echo $this->__('Download and Install') ?></a>
            <?php } ?>

我总是得到一个未找到的页面…请指路好吗?

谢谢。