Is Win Vista Black Edition Installs On Previous win Vista ?

Hey Guys,
Can You Tell Me That The Windows Vista Black Edition
Installs On Previous Windows Vista Ultimate
or Is This Another OS ?
I mean Is This Necessary To Have The Previous windows vista ?
Or I Have To Delete My Previous windows And Then Install The Black Edition ?
Is This Vista Ultimate Addon or What ?
Plz Reply
Answer #1
Hmmm…I don’t see the point of having 2 vista ultimates…Black Edition is just Vista ultimate with a few updates and twaeks….
Answer #2
lionden replied: Hmmm...I don't see the point of having 2 vista ultimates...Black Edition is just Vista ultimate with a few updates and twaeks....
Thx For The Info.
Answer #3
Add an useful, elaborate and on-topic comment next time.
Answer #4
I would get rid of Vista and install Win 7 anyway.