Whenever I am trying to execute a Visual Studio unit test in MVC project. I am getting below test run error

:
Failed to queue test run 'MUKHERS4@nw916233 2009-04-15 20:06:28': Test run 'MUKHERS4@nw916233 2009-04-15 20:06:28' cannot be executed on controller nw916233. No agents are marked online to execute test run.
MUKHERS4 is my laptop userid and nw916233 is my laptop id. I don't know how are they becoming controller though I had not created any controller with this name. Do I need to do any configuration setting prior to start testing? please reply...
I am using VS2008 and ASP.NET MVC.