Implementing Application Sigin In Page instead of default ADFS sign-in page.

Hi,

We are in Process of integrating a JBoss Portal with some COTS applications and ADFS as Federation provider. 

There are couple of questions that we have:

1) Can we authenticate users through a sign-in page that is hosted on portal instead of ADFS default sign-in page ? and if possible what is the way to do it ?

2) What are the integration steps for integrating JBoss Portal application with ADFS ?

Thanks in anticipation,

Regards,

Sohel.