Thanks MichaelH. I′m going to download and give it a try ^_^.
Anyway, I′ve found a solution by myself using the customizable post listings plugin, making some changes on one of the docs I′ve found on the codex. This is my lines:
<?php get_header(); ?>
<?php if ( in_category(4) || in_category (8) || in_category (9) || in_category (10) || in_category (11) || in_category (12) || in_category (13) || in_category (14) || in_category (21) || in_category (24) || in_category (35) || in_category (36) ) {
$wp_query->query_vars['cat'];
echo '<div id="content"><div id="thumb-gallery">';
c2c_get_recent_posts(1000, "%post_excerpt%", $cat);
echo '</div></div><div id="sidebar">
';
if ( function_exists('dynamic_sidebar') && dynamic_sidebar(2) ) :
else :
endif;
echo '
</div>';
} else {
echo '<div id="content">?que?';
echo '</div>';
get_sidebar();
}
?>
<?php get_footer(); ?>
In the codex example, the $wp_query->query_vars['cat']
goes inside the plugin function. That gives an sql error in my page. But putting that line outside and before the plugin makes it work perfect. I hope this can be helpfull in anyway to somebody.
Again, thanks for your help, MichaelH.