I have done templating for different categories in WP ie. If I have a categoryID - 18 and I want to display the contents of this category differently than all other generic categories then I can create category-18.php write some code in it and thats it! I have a custom template for categoryID 18, but what about archive pages? Can I create a separate theme for categoryID 18's archive page? Ive tried using archive-18.php which was a hunch that turned out to be a FIASCO :)
Or Is it the good old way of putting a conditional block in PHP check for categories and render them from there, another hunch...