Using Pdo Layer In My Website, PDO MySQL

[PhoenixRe]

Hi, I am trying to launch my webpage but first I have to test it out and decided to go with a free service for starters. This is the only service I found where allows user creation and privileges settings but when I tested some scripts I got an error...
The think is I am using the PDO layer for whatever reasons but I am not sure if it is enabled...
So, can anyone answer me and if it's not, is there any way to enable it. All my php scripts are written using it and since it's a database based web page I use it A LOT...

Thanks for any help in advance...

By the way just to be sure that this is the problem here is the little script I tested

CODE

<?php

$db = 'XXXXXX_clanteam_XXXXX';
$dbhost = 'localhost';
$username = '718174_siteguest';
$password = '1q@W3e$R5t^Y7u';

    global $dbhost, $username, $password;
    $dsn = "mysql:dbname={$db};host={$dbhost}"; //
    
    try {
        $dbcnx = new PDO($dsn, $username, $password);
    }
    catch (PDOExsception $e) {
        error('Couldn\'t problems...'.$e->getMessage());
    }

    $query = $dbcnx->prepare("SELECT * FROM game_slot WHERE game_date='2012-05-10' AND field<3");
    $flag = $query->execute();
    if( $flag === false ) {
        print_r($query->errorInfo());
        error('Heh');
    }
    
    $result = $query->fetchAll(PDO::FETCH_ASSOC);
    print_r($result);
?>

and the print out

Fatal error: Uncaught exception 'PDOException' with message 'could not find driver' in /www/clanteam.com/X/X/X/XXXXXX/htdocs/index.php:12 Stack trace: #0 /www/clanteam.com/X/X/X/XXXXXX/htdocs/index.php(12): PDO->__construct('mysql:dbname=fu...', '718174_sitegues...', '1q@W3e$R5t^Y7u') #1 {main} thrown in /www/clanteam.com/X/X/X/XXXXXX/htdocs/index.php on line 12

[PhoenixRe]

Oh.. shame...
Out of curiosity how come?