Identities Hook [Cleanup]

i need a button that runs a script that i can use to do user cleanup on ~2300 accounts, since the accounts are in AD i should be able to write a small identity script that can check the users when i click the button. if the hook doesnt exist the button should not be there. or maybe if the button is there the pop up should say 'hook' not configured, would you like me to create a hook for your 'yes/no', then you get a starter hook to do your account look up and and all that nonsense.