One of the most annoying things in the default installation of X-Cart!
Here you go....in product.tpl, change this:
Code:
{include file="dialog.tpl" title=$product.producttitle content=$smarty.capture.dialog extra="width=100%"}
to this:
Code:
{include file="dialog.tpl" title=$product.product content=$smarty.capture.dialog extra="width=100%"}