title: TFS 2010:sprint backlog item is not visible in workitem menu
body: <p>I installed TFS 2010 trial version. 
  In Visual studio editor, under Team menu->New Work Item,
  I found only Bug, Issue, Shared Steps, Task, Testcase, User Story
  I didn't find ChangeRequest, Review, Risk, Sprint Backlog Items.
  How can I get those in my Team menu;
  Thanks</p>