I can't seem to connect with that FTP information. Let me try walking you through a quick test...
1) create a page called sessionSet.php and put this code on it:
<?php
@session_start();
$_SESSION['test'] = 'working';
?>
2) create a page called sessionGet.php and put this code on it:
<?php
@session_start();
var_dump($_SESSION['test']);
?>
Then browse both pages in order. Does the working message appear on the get page?