upload file from localhost to web hosting, ftp error?

[asindoro]

hello,
i'm make some script like this :
[PHP]
<?
$koneksi = ftp_connect("ft p.aaa.com");
$ftp_username = "asaaa";
$ftp_password = "12345";
$login = ftp_login($kone ksi, $ftp_username, $ftp_password);
if ((!$koneksi) || (!$login)) {
echo "Koneksi gagal";
}
else
{
echo "koneksi berhasil<br>";
// try to change the directory to somedir
if (ftp_chdir($kon eksi, "/public_html/file_varuna/data"))
{
echo "udah di dalem data";
$file = "2.txt";
$fp = fopen($file, "r");
$upload = ftp_fput($konek si, $file, $fp , FTP_ASCII);
if (!$upload) {
echo "Gagal upload";
} else {
echo "Upload sukses";
}
}
else
{
echo "Direktori ga bisa dibelokin";
}
}
ftp_close($kone ksi);
fclose($fp);
?>
[/PHP]
but it did not work in my web browser localhost said :

koneksi berhasil
udah di dalem data
Warning: ftp_fput() [function.ftp-fput]: Unable to build data connection: Connection refused in C:\Program Files\Apache Group\Apache2\h tdocs\kopi\inde x2.php on line 18
Gagal upload

??thanks before
[sorry for my bad english]..:)