Driver Bulid error for 64bit os on Vistual Studio 2005

i am using Visual studio 2005 with WDK 7600.16385.1.i am compiling User mode Printer driver it will successfully开发者_JS百科 build when i select "Win32" for platform but when i build this driver for "x64" i get compiler Error tha is given below

C:\WinDDK\7600.16385.1\inc\api\winnt.h(135) : fatal error C1189: #error : "No Target Architecture"

i have checked winnt.h and code is given below

    #if defined(_WIN64)

#if defined(_AMD64_)
#define PROBE_ALIGNMENT( _s ) TYPE_ALIGNMENT( DWORD )
#elif defined(_IA64_)
#define PROBE_ALIGNMENT( _s ) (TYPE_ALIGNMENT( _s ) > TYPE_ALIGNMENT( DWORD ) ? \
                              TYPE_ALIGNMENT( _s ) : TYPE_ALIGNMENT( DWORD ))
#else
#error "No Target Architecture"
#endif

#define PROBE_ALIGNMENT32( _s ) TYPE_ALIGNMENT( DWORD )

#else

and C/C++ command line switches is given below (copied from project "property->C/C++->Command Line")

/Od /Oi /I "..\inc" /I "C:\WinDDK\WXP\inc\wxp" /I "C:\WinDDK\WXP\inc\crt" /I "C:\WinDDK\WXP\inc" /D "_X86_=1" /D "i386=1" /D "STD_CALL" /D "CONDITION_HANDLING=1" /D "WIN32_LEAN_AND_MEAN=1" /D "NT_UP=1" /D "NT_INST=0" /D "WIN32=100" /D "_NT1X_=100" /D "_WIN32_WINNT=0X0500" /D "WINNT" /D "DEVL=1" /D "FPO=0" /D "UNICODE" /D "_IDWBUILD" /D "USERMODE_DRIVER" /D "DBG=1" /D "DEBUG" /D "RDRDBG" /D "SRVDBG" /GF /FD /MTd /Zp8 /GS- /Gy /Fo".\Debug/" /Fd"x64\Debug\vc80.pdb" /W1 /nologo /c /Z7 /Gz /TP /FI "..\inc\warning.h" /errorReport:prompt

Please help me as soon as possible

My best guess would be to define _AMD_64_ in the project properties (assuming you're using x64 and not ia64)

Why are you trying to build this from within Visual Studio? Using the WDK and the standard build procedure (i.e. sources/makefile and build).

-scott