Joomla login - cookie set

Working with Joomla 2.5 with the Community Builder extension. When a client logs in, Joomla sets a cookie and communicates with community builder via the user email address. I need the cookie to include the data in a field from community builder which includes an alpha numeric ID. This is what the company needs: <form name="form1" method="post" action="/[login to view URL]"> Cookie name: Expire date: optional exp date Expire time: optional exp time Unique ID: (Member ID Number) --- THIS IS IN A COMMUNITY BUILDER DATABASE Can someone help me set this up?