ADODB AND Zend Framework

I just kick start a new project which using the Zend Framework
One of my teammate suggested to use ADODB instead of Zend_Db as the database abstract layer. Of cause, I am just a newbie in Zend Framework and ADODB idiot, so I don't know what are the pros and cons between them ~

Q1: What is the pros and cons of Zend_Db compare with ADODB

 

I can do it

 

If you can than Please share with us

 

1. add ADODB in library directory
2. index.php add
require_once('adodb5/adodb.inc.php'); // recommend
$db = NewADOConnection('mysql');
3.$db->Connect($config->db->config->host,$config->db->config->username, $config->db->config->password, $config->db->config->dbname);
4.in controllers use it by global variable

This is site developed form Zendframework and adodb use mysql 4
http://thaiwebdirectories.meelink.com/
if you use mysql 5 I recommend Zend_Db_Table PDO
contract me at
http://www.thailandhotelforums.com/