title: Where does Visual Studio look for C++ header files?
body: <p>I checked out a copy of a C++ application from SourceForge (HoboCopy, if you're curious) and tried to compile it.</p>
  
  <p>Visual Studio tells me that it can't find a particular header file. I found the file in the source tree, but where do I need to put it, so that it will be found when compiling?  </p>
  
  <p>Are there special directories?</p>