Relational Database Help

Hi guys, I'm fairly new to databases and am just creating sample ones at the moment and following tutorials from books. I tried to create my own cinema/movie database yesterday and there's something wrong.

I really wanted to work this one out for myself but after trying many different combinations of various relationships I just can't seem to get it working.

I have four tables..

A member table: MemberID
A booking table: MovieID, Screening Number, MemberID
A movie table: MovieID
A screening table: Screening Number


So the booking table is a composite key that links the member tbale (via the memberid), the movie table (via the movieID) and the screening table (via the screening number)

The problem occurs when I try to make a booking form for members to book a movie.

I use the form wizard and take the following fields:

The MemberID from the member table, the Screening Number and MovieID from the booking table. Then I add other relevent information from the Movie and screening table (for example, screening time, date, price etc from the screenig table and movie name, information from the the Movie table)

The MemberID is displayed on the main form with the other information in a sub form.

The problem I am having is when I enter a booking on the form, I get an error telling me the Microsoft Jet Engine cannot find the screening number in the screening table or something like that.

It lets me enter the other information but not with the screening number.

Thanks for any help.

Benn.