3 IntelliSense: #error directive: Please use the /MD switch for _AFXDLL builds c:\program files (x86)\microsoft visual studio 10.0\vc\atlmfc\include\afxver_.h 81 3
you are looking for the stdafx.h at one level up the project directory. Make sure you are doing it correctly. probably try to give a full path and see if it picks it. If it does, this means the relative path has some problem.
Also, if you do not want to use the precompiled header, you can turn it off from project properties -> c++ -> precompile headers