nVIDIA shadow volume demo

akira32

I try to compile the shadow volume demo of nVIDIA as below website:
http://developer.nvidia.com/object/fast_shadow_volumes.html

But I have some problem.
I used the VC++6.0 to compile the demo source code with "G3D 6.00 beta 7" and "SDL 1.2.5".
But it appears one error as below:
Cannot open include file: 'xmmintrin.h': No such file or directory

Shoould I must download the SDK as below?
GLUT (included with G3D)
OpenGL 1.4 (included with G3D)
NVIDIA SDK extensions (included with G3D)