title: TFS and referenced DLLs
body: <p>We are using TFS and VS 2010.</p>
  
  <p>I have been working on a project that is using TFS as source control. 
  I have quite a few dlls that I have downloaded (such as log4net) and referenced in my project.</p>
  
  <p>When a new programmer connected to TFS and got my project out of source control, it failed to build as it said it was missing all these referenced dlls.</p>
  
  <p>What did I do wrong here? How can I include those referenced DLLs in source control.
  Do I need to add all these dlls to my project before referencing them? when I referenced them, I just browsed to where they were on my file system.</p>