Upgrading, but losing functionality?

Iv installed gl3w. When I do so, what happens is functionality like glLoadyIdentity and GL_PROJECTION appear to be lost, and glGenBuffers appears to now work. How do I retain the previous fictionsality?

gl3w exposes only the functions of the OpenGL core profile, so you have to either upgrade your code to modern OpenGL or use a wrapper supports the compatibility profile, like GLEW.