I've been searching for a way to list the catogory posts as titles, with options to open all or one, and this plugin does just that.
Just wanted everyone else who's searching to know, this is what you want!!
You have to replace the theme files from your theme with the ones from N.A.
One problem, in case you install. At least in my theme, which is based on Kubrick, the lists came up, to clicking on Expand gave me the blog front. In the plugin folder open up the nicer_archives.php and in cat_header_link() function look for $post->post_category and replace it with $post->cat_ID . Two to change, once for the Expand link and once for the Collapse link.