This works well with 3.6.7PL by changing the location of the code in the header. Instead of a separate table, use the code between the tr and place within the default table code.
Code:
<table border="0" width="$stylevar[outertablewidth]" cellpadding="0" cellspacing="0" align="center">
<tr>
<td align="left" colspan="2"><a href="/" style="text-decoration: none"><font color="white"><h1>HARRY POTTER CHAT</h1></font></a></td>
<td align="$stylevar[right]"> </td>
</tr>
<tr>
<td style="$stylevar[left]"><img src="images/bg/page_top_left.png"></td>
<td background="images/bg/page_top.png" width="100%"></td>
<td style="$stylevar[right]"><img src="images/bg/page_top_right.png"></td>
</tr>
</table>
I created the transparent png files using
Fauxto. You will want 20 x 20.