Problem in importing class

Hello Every body,


I have got a prob as m a fresher��
I am creating a web project in which I have created a folder named Components , in which I included 4 class files(BookReviewsCS, BookReviewsItemCS, BookReviewsCollectionCS, CollectionitemCompareCS) with Namespace BookRevsCS.(I can use it in app_code but i wnt to know how to use it wen it is in diff folder)


Now I am not able to access the class names, methods, properties in these files�
I want to access the methods in the BookReviewsCS into BookReviewsItemCS.

How can I access the methods??


Plz help me out

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