Question.

Where can i get the OpenGL SDK? i’m looking in this website for a long time and i can’t find it!

Try at this link for SGI. the main site is at http://www.sgi.com
http://www.sgi.com/software/

Do a search for SDK only at the top of the page and several matches should come up. One of them is an FAQ for SDK and the other is a Home page for OpenGL SDK. I just went ahead and copied the link for your convenience. It should take you directly to what you’re looking for.
http://www.sgi.com/software/multipipe/sdk/index.html

Have fun.