Delphi XE2이상의 버전에서 작성된 소스네요.
델파이 XE2부터 기본유닛들에 Scope Name이 추가되었습니다.

하위 버전에서 사용하실려면 소스에서 scope name을 제거하세요.

System.Classes => Classes
Vlc.Controls => Controls
...

김태우 님이 쓰신 글 :
: [BCC32 Error] Main.h(6): E2209 Unable to open include file 'System.Classes.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(7): E2209 Unable to open include file 'Vcl.Controls.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(8): E2209 Unable to open include file 'Vcl.StdCtrls.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(9): E2209 Unable to open include file 'Vcl.Forms.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(10): E2209 Unable to open include file 'Vcl.ExtCtrls.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(11): E2209 Unable to open include file 'Vcl.Imaging.pngimage.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(22): E2209 Unable to open include file 'Vcl.Imaging.jpeg.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(23): E2209 Unable to open include file 'Vcl.ComCtrls.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] Main.h(25): E2209 Unable to open include file 'Vcl.OleCtrls.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
: [BCC32 Error] loading.h(6): E2209 Unable to open include file 'System.Classes.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
:     Main.h(27): #include loading.h
: [BCC32 Error] Main.h(34): E2209 Unable to open include file 'Vcl.Imaging.GIFImg.hpp'
:   Full parser context
:     Main.cpp(9): #include Main.h
:
:
: 컴파일 하면 위에 같은 에러가 나옵니다.
:
: 어떤  lib나 패키징을 추가 해야 하는건가요?
:
: 아 저는 Embarcadero RAD Studio XE 2011버전입니다.