SSO in iview

Hi,

I want create an iView for taking data from R/3 system and display as tableview.

My R/3 System and Portal are configured with SSO.

Question: While developing the iview do we have to implement any method for SSO inside the code.

or Is already configured SSO will be sufficient.

If we have to implement new interface(method), how can i use that inside my iView.

Thanks,

Damodhar.