code is shown towards the bottom of
http://forum.x-cart.com/viewtopic.php?t=1179&highlight=
If you were putting this on the home page I would adapt the welcome.tpl template to replace
{include file="customer/main/featured.tpl" f_products=$f_products}
with
{include file="customer/main/listall.tpl" products=$products}
and amend the customer/home.php file from
require "./featured_products.php";
to
require "./total_list.php";
PLEASE BACKUP ALL FILES BEFORE DOING THIS JUST IN CASE!!