I want to use HTTP_DOWNLOAD to manage my downloads ,, I have never used PEAR before !!

HTTP_DOWNLOAD depends on many other packages , I downloaded them and the ones they , in turn , depend on and this is the structure I made :

Download.PHP    <---HTTP_DOWNLOAD MAIN FILE
Header.php      <--- HTTP_HEADER MAIN FILE
PEAR.php
PEAR5.php         
Type.php        <--- MIME_Type
   >Type        <---- FOLDER
      - Extension.php    MIME_Type File
      - Parameter.php    MIME_Type File

assuming that Http_DOWNLOAD depends on :

* PHP 4.2.0
* PEAR 1.4.0b1
* PEAR
* HTTP_Header
* pcre extension
* Archive_Tar (Optional)
* Archive_Zip (Optional)
* MIME_Type (Optional)
* mime_magic extension (Optional)
* pgsql extension (Optional)

and I edited the paths inside each file to reflect this structure , and I tried to run the following code :

<?php
require_once 'Download.php';
$params = array('file'=>'file.zip');
$down = new HTTP_Download($params);
$down->send(true); 
?>

nothing happens !! I also got a hard time trying to figure how to use the class and I think this code should work .. but not sure !

Help Please !