CAF Application

Hi All,

I am implementing a BPM with Web Dynpro for Java using this blog

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/501bd56f-a5a6-2b10-4fbf-a61a64055fe4?quicklink=index&overridelayout=true

The only part that is not described in this blog is that of CAF application creation.

Can you plesae help me with the CAF application creation as per this blog?

One more question,is it mandatory to create the CAF application whenever BPM and Web Dynpro for Java come into picture?

Thanks in advance