Sorry,
Step - 2 links problem, please use this code
Find this code:
<a href="{$product.alt_url|default:$product.page_url| amp}">{include file="product_thumbnail.tpl" productid=$product.productid image_x=$product.tmbn_x image_y=$product.tmbn_y product=$product.product tmbn_url=$product.tmbn_url}</a>
and replace
<a class="thumbnail" href="{$product.alt_url|default:$product.page_url| amp}"><span><img src="image.php?id={$product.productid}&type=P" /></span>{include file="product_thumbnail.tpl" productid=$product.productid image_x=$products.tmbn_x|default:$config.Appearanc e.thumbnail_width image_y=$products.tmbn_y product=$products.product tmbn_url=$products.tmbn_url}</a>