My solution:

Create a file named "app_model.php" in app directory.

Copy in that file this:

Model Class:

<?php 
class AppModel extends Model{

var $habtm = array();

function prepareJoinStatement(){
    $join_statement = "";
    foreach($this->habtm as $key=>$value){
        $fk_this = $value[0];
        $fk_otherModel = $value[1];
        
        $otherModelName = $value[2];
        loadModel($otherModelName); 
        $otherModel = new $otherModelName();
        $otherTableName = $otherModel->useTable;
        
        $join_statement .= " JOIN ".$key." on ".$this->name.".id=".$key.".".$fk_this;
        $join_statement .= " JOIN ".$otherTableName." as ".$otherModelName." on ".$key.".".$fk_otherModel."=".$otherModelName.".id";
    }
    return $join_statement;
}

function findAll($conditions = null, $fields = null, $order = null, $limit = null, $page = 1, $recursive = null) {

        $db =& ConnectionManager::getDataSource($this->useDbConfig);
        $this->id = $this->getID();
        $offset = null;

        if ($page > 1 && $limit != null) {
            $offset = ($page - 1) * $limit;
        }

        if ($order == null) {
            $order = array();
        } else {
            $order = array($order);
        }

        $queryData = array('conditions' => $conditions,
                            'fields'    => '*',
                            'joins'     => array($this->prepareJoinStatement()),
                            'limit'     => $limit,
                            'offset'    => $offset,
                            'order'     => $order
        );

        $ret = $this->beforeFind($queryData);
        if (is_array($ret)) {
            $queryData = $ret;
        } elseif ($ret === false) {
            return null;
        }

        $return = $this->afterFind($db->read($this, $queryData, $recursive));

        if (isset($this->__backAssociation)) {
            $this->__resetAssociations();
        }

        return $return;
    }
    
}
?>
Now in the model you can delete (or comment) the variable $hasAndBelongsToMany and use the variable $habtm in this way:

Model Class:

<?php 
var $habtm = array('HABTM_TABLE_NAME'=>array('FOREIGN_KEY_TO FIRST_TABLE','FOREIGN_KEY_TO_SECOND_TABLE','SECOND_TABLE_MODEL_NAME'));
?>
eg.

I TABLE: users(id,a,b,c,...)
I MODEL: User
II TABLE: phones(id,a,b,c,...)
II MODEL: Phone

HABTM TABLE: users_phones('user_id','phone_id','primary')

In the User Model i can write:

Model Class:

<?php 
var $habtm = array('users_phones'=>array('user_id','phone_id','Phone'));
?>
Now in my controller i can write:

Controller Class:

<?php 
$this->User->findall('Phone.a=\'xxx\'',null, null);
?>
or

[controller] $this->User->findall('users_phones.primary=\'Y\'',null, null);
[controller]
I hope this can help someone...