D on Windows - linker question

[Erik van Velzen]

Hello,
I have set up my enviroment according to these instructions:
http://wiki.dlang.org/Installing_DMD_on_64-bit_Windows_7_%28COFF-compatible%29

When I compile a small tutorial program I get this error:
error LNK2019: unresolved external symbol MessageBoxW referenced 
in function WinMain

I have to manually specify "User32.Lib" to dmd when I want to 
compile my program (or move User32.Lib to my project directory).

Is this normal?

Below is my sc.ini.

[Environment]
LIB="%DIR_WINSDK%\Lib\x64";"%DIR_MSVC%\lib\amd64";"%@P%\..\lib"
DFLAGS="-I%@P%\..\..\src\phobos" 
"-I%@P%\..\..\src\druntime\import" "-m64"
LINKCMD=%@P%\link.exe
LINKCMD64=%DIR_MSVC%\bin\amd64\link.exe

Obviously User32.Lib resides in "%DIR_WINSDK%\Lib\x64". This 
directory resolves correctly in windows explorer to "C:\Program 
Files\Microsoft SDKs\Windows\v7.1\Lib\x64"