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--------CODE---------------------------

<?

/* Easy Uploader */

// set variables (SET THESE TO SUIT YOUR CIRCUMSTANCES):

// Upload directory (MUST HAVE TRAILING SLASH):
$uploaddir="./file/"; //crea una cartella all'interno del server dove viene eseguito lo script
// Your email
$youremail="you@your-domain.co.uk"; //la tua e-mail
// Thank you page:
$thankspage="./thanks.htm"; //pagina ringraziamenti nella stessa directory

// Set Upload thanks message for USER
$uptymessage="$realname, thank you for uploading the file $file_name\n\nWe will get back to you ASAP.";
// Set Upload thanks message for OWNER
$ownermessage="$realname [ $email ] has uploaded a file named $file_name\n\nCheck the upload directory.";
// Email message on or off ? 1 = on, 0 = off
$emailmessages = "0";


// start code (DO NOT CHANGE ANYTHING BELOW THIS LINE):

// Check for valid email address

$x = ereg("^[0-9a-z]([-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.[a-z]{2,3}$",$email);

if($x==0)

// if no valid email address entered, display no email message
{
echo "<div align=center>You must specify a valid email address for yourself. Return to the form.</div>";
}
else {

// Check to see if valid file
if ($file == "none") {
// if no valid email address entered, display no file message
echo "<div align=center>You must specify a file to upload. Return to the form.</div>";
}
else {
//directory to upload to
copy($file, $uploaddir.$file_name);
unlink($file);

//return thank you page
Header("Location: $thankspage");
}
}
if ($emailmessages == "1") {
//mail you to let you know a new uploaded file
mail("$youremail", "Uploaded file", "$ownermessage");
//mail user to thank them
mail("$email", "Uploaded file", "$uptymessage");
exit;
}

?>

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Ecco qui, è molto semplice. Chiedi se hai altri problemi.