web positionning with 2 languages & WordPress

I would like to develop most of my websites with WordPress as the administration panel is so easy to use for my customers.
Most of my websites are developed in 2 languages (french and english)
Here is what my index page look like:

<?php
if (!isset($langue_user) && !isset($_SESSION["ch_langue"])){
$langue_user=substr($_SERVER["HTTP_ACCEPT_LANGUAGE"], 0, 2);
	switch($langue_user){	

	case "en":
	$_SESSION["ch_langue"] = "en";
	include(TEMPLATEPATH . '/content1e.php');
	break;

	default:
	$_SESSION["ch_langue"] = "fr";
	include(TEMPLATEPATH . '/content1fr.php');
	break;
	}
}
?>

Is it correct like this? Will Google consider that there are 2 different pages for french and english (with 2 different descriptions in the head?