how to set email and download class

[eluser]RaiNnTeaRs[/eluser]
and about the download class, i cant use it , this is my codes


$data=file_get_contents("c:/xampp/htdocs/ci2/storage/".$fn);
$name=$fn;
//force_download($name,$data);


i managed to upload my files, but not downloading it. can some help ? thanks