Uploading Files

I'm at one of those frustration levels.... can't seem to get a script working that will post and upload a file to the server. I"m working with the below. Can you help? <?php $numoffile = 1; $file_dir = "d:/upload/"; if ($_FILES['myfiles']) { print_r ($_FILES);

    for ($i=0;$i<$numoffile;$i++) {
      if (trim($_FILES['myfiles']['name'][$i])!="") {
        $newfile = $file_dir.$_FILES['myfiles']['name'][$i];
        move_uploaded_file($_FILES['myfiles']['tmp_name'][$i], $newfile);
        $j++;
      }
    }

} if (isset($j)&&$j>0) print "Your file(s) has been uploaded.<br>"; echo ' <form enctype="multipart/form-data" action="__URL__" method="POST">

    <!-- MAX_FILE_SIZE must precede the file input field -->
    <input type="hidden" name="MAX_FILE_SIZE" value="30000" />
    <!-- Name of input element determines name in $_FILES array -->
    Send this file: <input name="myfiles" type="file" />
    <input type="submit" value="Send File" />

</form>'; ?>