Uncaught exception 'Doctrine_Connection_Exception'

[eluser]WebMada[/eluser]
Hello!

In fact, I test a code that I pick up in the net
In my PC with WAMP 2.0, it works but in my laptop with WAMP 1.7, I got this page:

Fatal error: Uncaught exception 'Doctrine_Connection_Exception' with message 'Couldn't locate driver named mysql' in C:\wamp\www\DEBTOM\system\database\doctrine\Doctrine\Connection.php:465 Stack trace: #0 C:\wamp\www\EDBM08-I\system\database\doctrine\Doctrine\Connection.php(969): Doctrine_Connection->connect() #1 C:\wamp\www\EDBM08-I\system\database\doctrine\Doctrine\Query\Abstract.php(914): Doctrine_Connection->execute('SELECT t.idibme...', Array) #2 C:\wamp\www\EDBM08-I\system\database\doctrine\Doctrine

Sincerely, I don't know what this folder doctrine is? So, I'm searching but if you can help, you're welcome !!!