List all posts in current category and group by year

Anyone have any ideas on how to limit the posts to one category?

Here is the modified plugin code I am using but it pulls all posts from the site and I only want one particular category:

<?php

function favrik_recent_posts($args = '') {
	global $wp_locale, $wpdb;

    // params fun
    parse_str($args, $r);
    $defaults = array('category_name' => 'NTA', 'group' => '1', 'limit' => '10', 'before' => '<li>', 'after' => '</li>', 'show_post_count' => false, 'show_post_date' => true, 'date' => 'F jS, Y', 'order_by' => 'post_date DESC');
	$r = array_merge($defaults, $r);
	extract($r);

    // output
    $output    = '';
    $pre       = '';
    $full_date = '';
    $year      = '';
    $month     = '';
    $day       = '';

	// the query
	$where = apply_filters('getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'");
	$join  = apply_filters('getarchives_join', "");
    $qry   = "SELECT ID, post_date, post_title, post_name
              FROM $wpdb->posts $join
              $where ORDER BY $order_by LIMIT $limit";
	$arcresults = $wpdb->get_results($qry);
	if ($arcresults) {
		foreach ($arcresults as $arcresult) {
			if ($arcresult->post_date != '0000-00-00 00:00:00') {
				$url  = get_permalink($arcresult);
				if ($group == 0) { // dates at the side of the post link
                    $arc_date = date($date, strtotime($arcresult->post_date));
                    $full_date = '<em class="date">' . $arc_date . '</em> ';
                }
                if ($group == 1) { // grouping by year then month-day
                    $y = date('Y', strtotime($arcresult->post_date));
                    if ($year != $y)  {
                        $year = $y;
                        $pre = '<li class="year">' . $year . '</li>';
                    }
                }
                $text = strip_tags(apply_filters('the_title', $arcresult->post_title));
				$output .= get_archives_link($url, $text, $format,
                                              $pre . $before . $full_date,
                                             $after);
                $pre = ''; $full_date = '';
			}
		}
    }
    echo $output;
}

?>