on the webassist/plugins/catalog/details.php page, edit:
<div class="productDetailWrapper">
<div class="image">
<div class="imageWrapper">
<?php
$imgWidth = 300;
$imgSrc = "../../../" . ($WAGLOBAL_Images_Folder) . ((isset($row_WADAProducts['ProductImage']) && $row_WADAProducts['ProductImage'] != "default-product.png")?$row_WADAProducts['ProductImage']:$row_WADAProducts['ProductThumb']);
$imgSrc = abs2rel(rel2abs($imgSrc,dirname(__FILE__)),dirname($_SERVER['PHP_SELF']));
$WAResultsImage = new WA_Include('scripts/resize_image.php');
require($WAResultsImage->BaseName);
$WAResultsImage->Initialize(true);
?>
<img class="WADAResultThumb" border="0" src="<?php echo(abs2rel(rel2abs($WAResultsImage->Body,dirname($_SERVER['PHP_SELF'])),dirname(__FILE__))); ?>" id="ProductImage" />
</div>
</div>
<div class="addToCart"><?php echo($WAAddToCart->Body); ?></div>
</div>
to:
<div class="productDetailWrapper">
<div class="addToCart"><?php echo($WAAddToCart->Body); ?></div>
<div class="image">
<div class="imageWrapper">
<?php
$imgWidth = 300;
$imgSrc = "../../../" . ($WAGLOBAL_Images_Folder) . ((isset($row_WADAProducts['ProductImage']) && $row_WADAProducts['ProductImage'] != "default-product.png")?$row_WADAProducts['ProductImage']:$row_WADAProducts['ProductThumb']);
$imgSrc = abs2rel(rel2abs($imgSrc,dirname(__FILE__)),dirname($_SERVER['PHP_SELF']));
$WAResultsImage = new WA_Include('scripts/resize_image.php');
require($WAResultsImage->BaseName);
$WAResultsImage->Initialize(true);
?>
<img class="WADAResultThumb" border="0" src="<?php echo(abs2rel(rel2abs($WAResultsImage->Body,dirname($_SERVER['PHP_SELF'])),dirname(__FILE__))); ?>" id="ProductImage" />
</div>
</div>
</div>
then in the webassist/plugins/catalog/css/products_detail.css file, change the width of the .productDetailWrapper .addToCart selector:
.productDetailWrapper .addToCart {
width: 385px;
padding:0 0 12px;
background-image: url("../images/addtocart_bg.png");
background-position: bottom center;
background-repeat: no-repeat;
float:right;
}
to something like 696px