how download or upload with inet.ftp object?

[oyxiao]

if ftp address:203.3.12.1
usernameyxiao
passwordyxiao
how can i code with inet.ftp object and download or upload a file?
thank's !

[SWFKit]

var ftp = Inet.openFtp("203.3.12.1", 21, oyxiao, oyxiao);
ftp.connect();

ftp.onDownload = function (percent)
{
    trace(percent);
    return true;
}

ftp.download("test.rar", "c:\\samples\\test.rar");


ftp.onUpload = function (percent)
{
    trace(percent);
    return true;
}

ftp.upload("test.rar", "c:\\samples\\test_new.rar");