$db->sql_query("SET CHARACTER SET cp1251");
$db->sql_query("set character_set_client='cp1251'");
$db->sql_query("set character_set_connection='cp1251'");
$db->sql_query("set character_set_database='cp1251'");
$db->sql_query("set character_set_filesystem='binary'");
$db->sql_query("set character_set_results='cp1251'");
$db->sql_query("set character_set_server='cp1251'");
$db->sql_query("set collation_connection='cp1251_general_ci'");
$db->sql_query("set collation_database='cp1251_general_ci'");
$db->sql_query("set collation_server='cp1251_general_ci'");