centos에서 VI editor에서 한글 깨지는거 같은데~~ 어디에서 수정하면 될까요?

<?php

define('_INDEX_', true);

if (!defined('_GNUBOARD_')) exit; // ?~\?~D ?~N~X?~]??~@ ?| ~Q근 ?~H?~@

if (G5_IS_MOBILE) {

    include_once(G5_THEME_MOBILE_PATH.'/index.php');

    return;

}

include_once(G5_THEME_PATH.'/head.php');

?>

<h2 class="sound_only">?~\?~K| ?~@</h2>

<!-- ?~\?~K| ?~@ ?~K~\?~^~Q { -->

<?php

//  ?~\?~K| ?~@

$sql = " select bo_table

            from `{$g5['board_table']}` a left join `{$g5['group_table']}` b on (a.gr_id=b.gr_id)

            where a.bo_device <> 'mobile' ";

if(!$is_admin)

    $sql .= " and a.bo_use_cert = '' ";

$sql .= " order by b.gr_order, a.bo_order ";

$result = sql_query($sql);

for ($i=0; $row=sql_fetch_array($result); $i++) {

    if ($i%2==1) $lt_style = "margin-left:20px";

    else $lt_style = "";

?>