ACL Class - Own or Zend

[eluser]opel[/eluser]
I have set up a administrators table where they can select a role via a foreign key select box and also a table that contains all my controllers/methods. All I am looking to do is have an ACL that will looked to check if the role of the logged in administrator permits them to view the controller/method inside the admin directory ?

I was going to role my own but don't want to reinvent the wheel.