All of them. The key unlocks the version that will be installed.
Your key will be an Ultimate key.
Yes.
It is true. The DVD contains ALL Vistas ever available in Shops.
Starter( the "3rd World Windows" ) /HomeBasic ( No Aero - Windows )
/HomePremium/Business/Ultimate/Home "N" ( for Europe without
MediaCapabilites = the "crippled" Windows ) etc ..
And you can try all the other versions to for 14 days if you like to.
Just skip the entering of the Key and press "next" - you will then be able
to select from all the editions.
But as MICHAEL wrote : the Key is only good for activating the ULTIMATE.
All other need their own Key after 14 days of use, which at this moment are
not available to public users.
But you can also have differnt Vistas on one PC if each one of them has its
own Partiton. That's how I do it to figure out which version fits my needs.
( at this point I like Home-Premium most and think that will be what I buy )
SBJ