Quote: Originally Posted by
Brink 
Hi Amplid,
What holds the registered license information for Vista is the unique product key number for each Vista, not the DVD. You can use any retail Vista installation DVD to install Vista on any computer. You just need a different legal product key number you own for each install instead of theirs.
The same goes for the 64 bit Vista installation DVD, except that you would use the product key number from the same 32 bit Vista edition you own instead to activate the 64 bit Vista. You of course must do a clean install when going from a installed 32 bit Vista to a 64 bit version, and the other way around to.
I spoke with my relative and he has a higher version of Vista 64 I think he said? Ultimate like the previous poster said?
If I bought Vista Home Premium 32bit, I use his more-featured Vista 64 to install Home Premium 64 from that same DVD and it will just downgrade me to the proper one I bought? It's just a universal upgrade? Or there does it only allow you to install from the same "lineage" that you currently have from a certain disk type? HomeP 32 -> HomeP64 DVD, Ultimate32 -> Ultimate64 DVD?
(specific 64 disks for each type?)