Demo đây http://tuoiteen.info/forum/showthread.php?t=15326
Vào templates đang dùng --> Postbit templates ---> postbit_legacy tìm :
CODE
<div id="post_message_{vb:raw post.postid}">
      <blockquote class="postcontent restore ">
       {vb:raw post.message}
      </blockquote>
     </div>
Thay bằng:
CODE
<!-- KHUNG BÀI VIẾT -->
<div>
<table cellSpacing="0" cellPadding="0" border="0" style="width:auto">
<tr>
<table cellSpacing="0" cellPadding="0" border="0" id="table4" style="background:url(R2/images/nen.gif)">
<tr>
<td style="padding: 0px; width: 1%;">
<img alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_01.gif"></td>
<td style="padding: 0px; background-image: url('http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_03.gif')" width="100%"><img alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_02.gif"></td>
<td style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px" width="1%">
<img alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_05.gif"></td>
</tr>
<tr>
<td style="padding: 0px; background-image: url('http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet1_13.gif'); width: 1%;">
&nbsp;</td>
<td style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px" width="100%">
<div id="post_message_{vb:raw post.postid}">
<blockquote class="postcontent restore ">
{vb:raw post.message}
</blockquote>
</div> </td>
<td style="padding: 0px; background-image: url('http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet1_06.gif')"></td>
</tr>
<tr>
<td style="padding: 0px;" vAlign="top">
<img alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_06.gif"></td>
<td style="padding: 0px; background-image: url('http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_08.gif')">
<img valign="left" alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_09.gif" style="float: right" />
</td>
<td style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px" align="right">
<img alt="" src="http://i698.photobucket.com/albums/vv343/yoken9x/baiviet/baiviet_10.gif"></td>
</tr>
</table>
<!-- / KHUNG BÀI VIẾT -->