Another way to deter photo thieves is to create a transparent gif and place it over your photo. When a user right-click's the image, the invisible gif files is saved onto the computer, not your photo. To do this, place your image as the background of the table's cell, while the .gif file is displayed on top of that. Here is an example of how to do place this transparent file into your code:
<table border="0" cellpadding="0" cellspacing="0" >
<tr>
<td background="yourimage.jpg" width="450" height="500">
<img border="0" src="transparent.gif" width="450"height="500">
</td>
</tr>
</table>