Major modification

OK, this is what I want to do for both the guestbook and advanced poll.

For the guestbook I want to be able to import the user ID from the membership database for the name, and then log it so that person can NEVER sign the guestbook again.

I want the poll to also see the membership database user ID and log it so that person cannot vote again until the poll ends. (Yes I know that's what the IP logger and cookie are for , but people delete cookies, and I don't use the IP logger, because from what I understand it is not good for people coming through proxies like aol, or college campuses.)

And yes, I understand that people can just sign up with a new user and password, but I also have a deterrent for that through the main signup.

I understand that both of these will require databases. I am willing to discuss paying for these if that's what it will take.(Forgive me if that's not appropriate here)

Any help please.