How to access all the classes in a jar file

hai
i have a custom built JAR file which has many classes(Translets) in it . i want to access the classes inthe JAR file in a JSP page or an servlet. I have tried setting the classpaths etc , but nothing has happened.
Where should the jar file be Palced - i am using Tomcat Server.
How Can i Access the class files .. Very Urgent .. Please Help me ..
Peter Iyer

What is showing a file not found error? The web browser? if so, that's probably not a problem with the jar file.
Also, have you expanded your jar file to make sure that you jarred it up correctly?

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