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.

 If you are more into the "digital" board, there are other options like Telerik Work Item Manager for TFS, and AgileZen.

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 :).

Happy Scrumming.