How to edit the User Profile webdynpro application in Personalization

Hi All,

I need to edit the User Profile application in Portal,which is available in Personalize option. Here are the things need to do on the application

I need to disable the email address option.

or

when user enters the mail id which is not in the domain like

our company domain is user@abc.com, when the user enters mail id like user@gmail.com, it should not allow user to save the mail.

How to control this. As I know this can controled in the webdynpro application. where to get that application.

If anyone have an idea please help me.

Thanks in advance.

Regards

Ponnusamy P