SKANK!!!!! 5 Posting Pro in Training

the most important thing is that people cant access the members only page without loggin in first.
the second most important thing is actually loggin the person in and being able to like store a session i guess thats what it is that makes it so they can visit thir own profile.
the third most important thing is that they cannot login without having their registration been verified.
in my mysql database once a user registers it sends them an email with a link they have to click to chance a "column" in the mysql database where their info is stored from "notverified" to "verified and a member"
i dont want the not verified ones to get to login just cause they did the registration.

i need the user to be verified to be able to login thats why i dont know how to use all the other login tutorials i have something different

anyone know how to help with this? ivebeen lost for several weeks on how to do this any help would be really appreciated!