in the webassist/plugins/catalog/details.php file, change lines 83 - 85:
<div class="addToCart"><?php echo($WAAddToCart->Body); ?></div>
</div>
<div id="ProductLongDesc"><?php echo wa_evaluate($row_WADAProducts["ProductLongDesc"]); ?></div>
to:
<div class="addToCart"><?php echo($WAAddToCart->Body); ?></div>
<div id="ProductLongDesc"><?php echo wa_evaluate($row_WADAProducts["ProductLongDesc"]); ?></div>
</div>
and in the webassist/themes/BHOOC/css/configurable.css file, add the following css:
#ProductLongDesc {
float: right;
width: 400px;
}