You can get even more specific in the Template Hierarchy by providing a file called, for instance, category-6.php — this file will be used rather than category.php when generating the page for the category whose ID number is 6. (You can find category ID numbers in Manage > Categories if you are logged in as the site administrator in WordPress version 2.3 and below. In WordPress 2.5 the ID column was removed from the Admin panels. You can locate the category id by clicking ‘Edit Category’ and looking on the URL address bar for the cat_ID value. It will look ‘…categories.php?action=edit&cat_ID=3’ where ‘3’ is the category id). For a more detailed look at how this process works, see Category Templates.