Using Zend_Auth to retrieve a user's role to use in Zend_Acl

Hi,

If this has been asked often before, I'm very sorry, but I'm new to the Zend Framework and I've tried searching the mailinglist and the internet on how to combine Zend_Auth and Zend_Acl, but I haven't been able to find out.

Basically, all users have their role specified in the database. However, I can't seem to get Zend_Auth to give me this rank. I've found this tutorial: http://devzone.zend.com/node/view/id/1665
But that seems to use an old version of the Zend Framework (I believe it was 0.7.0) so this doesn't work anymore:

$this->_auth->getIdentity()->getUser()->role

I'd be extremely grateful if anyone could help me with this.

Thanks in advance,

-- 
Vincent