Questions on SAP Biller Direct Java Customization

Hi,

I am working on SAP Biller Direct java customizations. Can anyone help me find answers to these questions.

-- I have created local DC from the Biller direct track in NWDI. I would like to change the User registration page in Biller Direct.

Can any one let me know the JSP page name for that and where can i find it in the components.

--- Also all this development do i have to do it in J2EE perspective and checkin my changes?

Also i would like to know if anyone can send some documents on devlopment part of Biller direct.

Thanks

Edited by: Aparna on Aug 20, 2009 12:33 PM