preprocessor not working VC++.net.

[sandy]

Hi,
I am porting code from 32 bit to 64 bit using VC++.net 2003 & SDK for
Windows Server 2003 SP1.
When I a compiling below code i expect that it should compile
#if part but actually it is compiling #else code.
Why ???
My project C++ switch to Multi-threaded Debug DLL (/MDd).
#define USE_MFC_CLIST
#if defined(USE_MFC_CLIST) && defined(WIN32)
&& defined (_AFXDLL)
#include <afxtempl.h>
#define v_List CList
typedef POSITION v_ListPOSITION;

#else
//Cybage test. please remove later.
//TRACE("CList is added in compilation");
#include <list>
......
#endif

One more thing if I remove the _AFXDLL then
#if defined(USE_MFC_CLIST) && defined(WIN32)

then if part code gives me the compiled error.

F:\Program Files\Microsoft Platform
SDK\Include\Win64\MFC\AFXV_W32.H(14) : fatal error C1189: #error :
WINDOWS.H already included. MFC apps must not #include <windows.h>
Your suggestion is appreciated.