This is where your every friendly folks at Microsoft come in. To put it quickly: Microsoft may never release the OpenGL 1.3 headers and libraries (they haven''t released the OpenGL 1.2 libraries and headers, and it''s been out for years). That doesn''t mean your video card can''t support OpenGL 1.3 (most NVidia cards already do), it just means you have to pretend you''re using OpenGL 1.1 and deal with extensions.
If you program for an platform (as in OS) that supports OpenGL 1.3 (i.e. anything except Windows) you can get headers and libraries (I don''t know where to get them, I only have the 1.2 headers and libraries for Linux ).