Show image description under image before clicked

Are you referring to use cases involving CCK imagefield?

Stella showed me somewhere in the handbook, but I forgot the link. Here's with some modifications to suit my need. This will display the description along with thumbnails and also on the lightbox. You can play around with it, don't forget to change gausarts and whatever necessary there:

<?php if ($field_image[0] != '' && !$teaser ): ?>
<div id="photo-gallery">
<?php
$thumbs_class['attributes']['class'] = 'gallery-thumbs';
foreach((array)$node->field_image as $item) {
$lightbox_preset = 'original'; 
$title = check_plain($item['data']['title']);
//$price = check_plain($item['data']['price']);
$description = check_plain($item['data']['description']);
$lightbox_path = imagecache_create_url($lightbox_preset, $item['filepath'] );
$imagecache_image = theme('imagecache', 'thumbnail', $item['filepath'], $alt = $item['filename'], $title,$thumbs_class['attributes']);
$caption = $description.'<br /><h2> '. ' GAUSARTS GALLERY </h2><p> <small>Use right and left arrows or the mouse to navigate</small></p>';
print '<div class="field-image"><a class="gallery-thumbs" title="'.$caption.'" rel="lightbox[photo_gallery]" alt="gausarts image" href="'.$lightbox_path.'">'. $imagecache_image .'</a><br />'. $description .'<br /></div>';
}
?>
<div class="clear-block"></div>
</div> <!-- #/photo-gallery -->
<?php endif; ?>

And use this css:

.field-image{float:left;margin:0 15px 40px;width:120px;/*match the width of my thumbnails*/}
.field-image img{clear:both}

Good luck!