You should be able to activate and should activate the 32bit and 64 bit
versions of Vista because if you don't, then it will shut down itself when
the time runs out. Even if they are installed on the same machine or
hardware. The OS requires activation no matter what. If the OS has been
installed on a different machine and was activated on that machine, then
you
will not be able to activate that copy anymore, unless you call Microsoft.
You can install more than 1 copy of Vista on the same machine and still
activate it with no problems. I have 32 and 64 bit Vistas on same hard
drive.
I have activated them and have reinstalled them a few times and
reactivated
them again with no problem.
