You can pass category-id (cat=3) if using categories such as:
query_posts("post_type=portfolio&cat=3&paged=".get_query_var('paged'));
If there are custom taxonomies (for ex: taxonomies name is 'actor') the syntax would be such as:
$args = array(
'post_type'=> 'movie',
'actor' => 'Bruce Campbell, Chuck Norris',
'order' => 'ASC'
);
query_posts( $args );
For more you can visit: http://codex.wordpress.org/Function_Reference/query_posts
Although WP_Query is recommended approach instead of query_posts