SP for selecting available quizes

Hello,
The following tables exist
QuizTable
QuizID (primary key)
Title
Description
IsAvailable

UserQuizTable
UserQuizID (PK)
QuizID (FK)
DateTimeComplete
Score
UserName

I need to develop a stored procedure that will return all of the quizes from the QuizTable that are available and that a particular user has not yet taken.


To return a list of quizes with no entries at all in the UserQuiz table, I'm using the following SQL:
select Quiz.QuizID, Quiz.Title, Quiz.Description,
Quiz.IsAvailable FROM Quiz Left Outer Join
UserQuiz ON Quiz.QuizID = UserQuiz.QuizID
Where UserQuiz.QuizID is null
AND Quiz.IsAvailable=0

This is only getting me 1/2 the way to where I need to end up.

Any suggestions greatly appreciated.