I see, there isn't a real elegant solution to this unfortunately as x-cart won't allow a category to be both a root category and a subcategory.
In your .tpl find:
Code:
home.php?cat={ $subcat.categoryid }
Change to:
Code:
home.php?cat={if $subcat.categoryid eq '264'}270{else}{$subcat.categoryid}{/if}
In case the 264 subcategory is accessed from elsewhere you may want to put this code in your .htaccess:
Redirect 301 /home.php?cat=264
http://1090484.nwinetworks.com/home.php?cat=270