Java iviews and PDV Urgent!!!!

Hello FOlks

I am working on EP5.0SP5. I need to do some modification to the existing custom developed java iviews. These iviews were developed using PDV. There is no much documentation available on this. So if any one could tell me where begin the modifications for these iviews it will be of great help to me.

I need to make some columns removed from the iviews etc.

Any help will be of great help. I am working on PDV for the first time.

Thanks