Sorry, i thought you were running you project from within VS. I dont know of a mechanism to write debug output once the project is deployed. Apart from writing your own Logger?

From the menu ; View --> Other Windows --> Output will display your output window. Anything written by System.Diagnostics.Debug.WriteLine("A message"); will be written to the Output window. Trust me, ive used it alot. Try sticking a breakpoint in and making sure that this Debug.WriteLine is actually being called.

System.Diagnostics.Debug.WriteLine() will write to you Immediate Window.

Actually it might be the Output window, but you get the drift