bool InitializeGL()
{
   glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

   glEnable(GL_DEPTH_TEST);
   glEnable(GL_TEXTURE_2D);

   // With this we will load the list of extensions the hardware supports.
   char *extension = (char*)glGetString(GL_EXTENSIONS);

   // Check for multitexture support.
   if(strstr(extension, "GL_ARB_multitexture") == 0) return false;

   // Load the multitexture funtion and test if all went well.
    glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC)wglGetProcAddress("glActiveTextureARB");
    glMultiTexCoord2fARB   = (PFNGLMULTITEXCOORD2FARBPROC)wglGetProcAddress("glMultiTexCoord2fARB");

   // Error checking to make sure functions loaded.
   if(!glActiveTextureARB || !glMultiTexCoord2fARB) return false;

..then my level loading code..
}

void RenderScene()
{
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);   // Clears the screen.
   glLoadIdentity();                   //Reset modelview matrix for new frame.

   // Set the camera.
   gluLookAt(Camera.mPos.x, Camera.mPos.y, Camera.mPos.z,
             Camera.mView.x, Camera.mView.y, Camera.mView.z,
             Camera.mUp.x, Camera.mUp.y, Camera.mUp.z);

   // Grab the model view matrix and the projection matrix and store them in our arrays.
   float model[16] = {0};
   float proj[16] = {0};
   glGetFloatv(GL_PROJECTION_MATRIX, proj);
   glGetFloatv(GL_MODELVIEW_MATRIX, model);

....rendering level code..
}