set up global include and lib dirs in visual studio 2012

1) open any project
go to View->Property Manager

global include lib dir visual studio

2) pick up any project and choose DEBUG/RELEASE wi32/win64 configuration -> Microsoft.Cpp.Win32.user file

choose VC++ directories and add desired Include and Lib dirs to appropriate section (in this case boost dirs)

property manager visual studio

Microsoft.Cpp.Win32.user configuration file is added globally to all projects