Help with query_posts

Hello one more time. I am new to wp modules, but not found any solution, so i tried to do it by my self…

So i have a query

query_posts(array(
'showposts' => $home_featured_num,
'post__in' => $sticky,
'caller_get_posts' => 1,
));

And also i created custom field in metabox, which is applied in bd in wp_postmeta as https://dl.dropbox.com/u/14396564/screens/wp_postmeta.png (screen). So i need modify query_posts that it select only post with featured_use:true.