Forums Scripts & Popups Need to check if an user is identified

Hi everybody,
i need a code to check "on join" if users are identified, if they are, then they can use the levels I gave them, if not, it will trigger a notice reminding them to identify with nickserv. I think then i could use the level users by nick, cause masks allways rotate and when they join, my bot can´t identify them. Another problem I think, when I give levels by nick, if they change it to another grouped nick, my bot can`t recognise them anymore...well enough hehe

Thanks in advance :¬)