Kanban board will provide a better transparency to your agile process.
I won't try to explain what it is since others has done it before... which you can see here. The link also provide an excellent e-book on how to integrate Scum and Kanban and a link to their example of a kanban board for those who wants to see the quick details. You can see it here.
Oh, if you haven't heard already, MSF Agile 5 (which ship as a template with TFS 2010) is basically a Scrum based process. Don't believe it, see this.
So, learn it, use it, love it :).