Let's say you didn't want products_id 199 and 26 to show in the Best sellers sidebox ...
You could customize the best_sellers.php sidebox module with something like:
Code:
if (isset($current_category_id) && ($current_category_id > 0)) {
$best_sellers_query = "select distinct p.products_id, pd.products_name, p.products_ordered
from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd, "
. TABLE_PRODUCTS_TO_CATEGORIES . " p2c, " . TABLE_CATEGORIES . " c
where (p.products_status = '1'
and p.products_ordered > 0
and p.products_id = pd.products_id
and pd.language_id = '" . (int)$_SESSION['languages_id'] . "'
and p.products_id = p2c.products_id
and p2c.categories_id = c.categories_id
and '" . (int)$current_category_id . "' in (c.categories_id, c.parent_id))
and p.products_id not in (199, 26)" . "
order by p.products_ordered desc, pd.products_name
limit " . MAX_DISPLAY_BESTSELLERS;
$best_sellers = $db->Execute($best_sellers_query);
} else {
$best_sellers_query = "select distinct p.products_id, pd.products_name, p.products_ordered
from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd
where (p.products_status = '1'
and p.products_ordered > 0
and p.products_id = pd.products_id
and pd.language_id = '" . (int)$_SESSION['languages_id'] . "')
and p.products_id not in (199, 26)" . "
order by p.products_ordered desc, pd.products_name
limit " . MAX_DISPLAY_BESTSELLERS;
$best_sellers = $db->Execute($best_sellers_query);
}