Can Anyone Tell Me?

[Deep Krishna]

Dear Friends,
I am based in Bay Area and have started working in the area of Distributed Computing. My project is on CORBA and I dont have much time to learn CORBA.
As suggested by few of my javarancher friends, I have started working with CORBA@Whiz from whizlabs (www.whizlabs.com/jwhiz). Its giving me good start but it doesnt give details about advanced topics like DII/DSI. It would be great if anyone tell me the good source (concise) for these topics.
Thanks a ton in advance.
Yours
Deep