OpenGL's own Wiki has written
Windows
If you are running Windows 98/Me/NT/2000/XP/2003/Vista, the OpenGL library has already been installed on your system.
OpenGL's own Wiki has written
The standard Windows OpenGL32.dll library alone will not provide you with hardware acceleration for OpenGL. In order to get hardware acceleration, you will need to install the latest drivers for your graphics card. The second reason to install new drivers is to have the latest version of GL on your system (the max version supported by your GPU):...