Hi Paul,
At the moment that code is looking for the image in the same directory as the page it is executed on.
You need to change the line:
<img src="<?php echo $row_WADALogo['ItemThumb']; ?>" alt="ImageThumb" />
to read
<img src="../images/<?php echo $row_WADALogo['ItemThumb']; ?>" alt="ImageThumb" />
but make sure that the relative path is correct for your folder structure.
Cheers
Ian