This code is in my functions.php:

array( "name" => "Headline",
"type" => "section"),
array( "type" => "open"),

array( "name" => "Headline  Categories",
"desc" => "Choose a category from which featured posts are drawn",
"id" => $shortname."_headline",
"type" => "select",
"options" => $wp_getcat,
"std" => "Select a category"),

array( "type" => "close"),

Now, how to show posts from category select on page.php or page template?