<b:if cond='data:blog.pageType == &quot;item&quot;'>

<table border="3" cellpadding="1" cellspacing="1" dir="ltr" style="height: 282px; width: 338px;">

        <caption>Advertisements</caption>

        <tbody>

<tr>

                        <td>

Replace PLACE YOUR AD CODE HERE with your parsed ad code.

</td>

                </tr>

</tbody>

</table>

</b:if>

<data:post.body/>

if you find that your template has this code <data:post.body/> more than once.

Then you should paste the highlighted code above it, One by one.