wglCreateContextAttribsARB and WGL_CONTEXT_ES2_PROFILE_BIT_EXT Issue

HI,

I am trying to create an OpenGL ES .20 compatibility profile on Windows. According to the spec:

http://developer.download.nvidia.com/opengl/specs/wgl_create_context_es2_profile.txt

If I ask for a 2.0 context and the WGL_CONTEXT_ES2_PROFILE_BIT_EXT is set, I should get an ES 2.0 context. When I use the following code:

GLint attribs = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 2,
WGL_CONTEXT_MINOR_VERSION_ARB, 0,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_ES2_PROFILE_BIT_EXT,
0 };

_glContext = wglCreateContextAttribsARB( GetDC(_hWnd), 0, attribs);

Calling glGetString(GL_VERSION) states that I have an ES 3.1 context.

Has anyone successfully used this extension?

Any ideas what I could have done wrong here?

Thanks!