Well i am currently a student at Computer Science and Engineering in a university in Turkey, and the department has some sort of alliance with Microsoft. Every student in Computer Science and Engineering dept. given a password. we login to a store page of e-academy.

There is plenty of microsoft apps/programs from office to visual studio pro editions, oses etc.

then i go select vista from list(every product is listed as free in price), then they gave me key and download link.

In Turkey, nearly all universites use various ditrubitons of Linux as their main os, i guess microsoft aims to make Windows more popular in universites this way.

it was Vista Bussiness.