I can use padding because many client didn't support it, either external css.
What I want is no cellpadding for the img but padding for the image description
<table border="1" cellpadding="10">
<tr>
<td><img src="http://placehold.it/100x100"/></td>
<td>1) pic description</td>
</tr>
</table>
<td style="padding:0;"><img src="http://placehold.it/100x100"/></td>
Here's your example updated: http://jsfiddle.net/7MzfR/1/
Just use inline CSS if you can't use an external CSS document.