I have a problem too , i'm trying to compile but i can't because i get this error...
Error 1 error C1083: Cannot open precompiled header file: 'Normal\steam_api.pch': No such file or directory C:\Programming\mw2\steam_api\Auth.cpp 14 1 steam_api
2 IntelliSense: #error directive: NTDDI_VERSION setting conflicts with _WIN32_WINNT setting c:\program files (x86)\microsoft sdks\windows\v7.0a\include\sdkddkver.h 259 2
3 IntelliSense: cannot open source file "buildnumber.h" c:\programming\mw2\steam_api\stdinc.h 14 1 steam_api