You can download it from here
In Future, there will be new version of the GLUT library, then you should be able to download the new ones from here.
Once you unzip it, you will get following files. Picture is attached below;
Now you need to copy some of these files to a different location as following:
I am using Visual Studio 2010 and Windows 7 for the development.
glut32.dll to C:\Windows\system
glut32.lib to C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib
glut.h to C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\GL
Note: there was no GL folder there, I had to create one.
Now Link your Project with opengl32.lib, glut32.lib, glu32.lib by doing following steps
Go To Project Property Page > Linker >Input >Additional
Picture Attached to give you a more fair idea.