If you mean in showthread as opposed to the data entry field then do this:
Create your tiling image.
Name it posttile.jpg
upload posttile.jpg to your skins misc folder.
Add the following to your skins Additional CSS Definitions (changing your_skins_name_here to your skins name!):
Code:
.posttiler {
background-color: #F7F7F7;
background-image: url(images/your_skins_name_here/misc/posttile.jpg);
background-repeat: repeat;
background-position: top center;
}
save
Open:
postbit
Find:
Code:
<tr>
<if condition="$show['moderated']">
<td class="alt2" id="td_post_$post[postid]">
<else />
<td class="alt1" id="td_post_$post[postid]">
</if>
<!-- message, attachments, sig -->
$template_hook[postbit_messagearea_start]
<if condition="$show['messageicon'] OR $post['title']">
In-line Find:
Replace with:
save file