How to add oracle thin driver in NetBeans 5.0

I have created on hibernate application using JDBC-ODBC driver. I want to use oracle thin driver. In NetBeans already i have JDBC-ODBC driver. How to add oracle thin driver in that ? When we open a project in netbeans, in the left side we have Runtime and Projects tab. In Runtime tab we have Servers, Processes, Databases .... Under database we have to add the driver. If anyone know how to do this, please help me.

Just right click on libraries -->add jar file--->Add classes12.jar; that's all. It will work.