After implementing the code, here is the current output:
<table><tr>
<td><div id="adt"></div></td> <!-- 336x280 ad code -->
<td id="butw"><div id="butto">Follow @Twitter</div></td> <!-- Twitter Button -->
<td><div id="ado"></div></td> <!-- 300x600 ad code -->
</tr></table>
(visual representation of the result)
I am aiming to position the Twitter div directly below the first TD. I am considering using CSS for alignment or exploring alternative methods that may have slipped my mind.