if you are expecting an answer then please feel free to post a question here. posting URL's to third party sites suggests you are spreading the same question across multiple sites.
1) create a table for films, create a realtionship between your table and films
use a combo box with the films in youir current form
2) if you are unable to add multiple instances of the same user and the same film, and its a requirement then your primary key is wrong. whther you use an autonumber key to ensure uniqueness or add another column tot eh primary key is upto you
what does your assignment say you have to do
I'd rather be riding on the Tiger 800 or the Norton