Since I have a 8500GT I have no idea on what the installer of the 64bit DVD is saying, I only get a black screen
So I just unplugged my Raid so it would not be lost and booted the DVD, and after it stopped doing anything I pressed 0 + Enter and nothing happend, then y +enter and the HD started ticking... After a while the DVD did it's magic and in the end the DVD was ejected
I removed the disk and pressed enter. Now it's doing something, I can surf the net and write this and log in to the Webadmin with my old user/pass so I guess I chose the uppgrade