if you look at this bit of code from customer/categories.tpl
{section name=cat_num loop=$categories}
<font class=CategoriesList>
<a href="home.php?cat={ $categories[cat_num].categoryid }">
>> { $categories[cat_num].category|escape }
</a></font>
{/section}
whatever you put wher ive added
>> will loop round too