I have the latest Nvidia geforce4 4200 drivers (v 40.72) which this website says is all I need to take advantage of openGL 1.3 features such as multitexturing. However whenever i try to use glActiveTextureARB(GL_TEXTURE0_ARB) it says that glActiveTextureARB and GL_TEXTURE0_ARB are not defined, glClientActiveTexture doesn’t work either. I can use multiple texture objects just fine in a scene, but no multitexturing. Is there some extra file I need to include to get the functionality? I am using MS VC++ 6.0. Any insight would be greatly appreciated

You’ll need header files that define the new procedures, defines, enums and whatnot. MS only delivers OpenGL 1.1 header files.

Look here: