I don't know if there's any way to check & see, but I do
know that if he's ever used the CD - you're given 30days
to activate it before it dies. So if he's had it
installed on a computer for more than 30 days - it has
been activated on that computer.
As for registering it, registration is optional -
activation is mandatory. You don't need to register the
software with Microsoft, but it needs to be activated to
be used after the 30 day mark. Activation is a copy
protection, meaning you can't install WinXP on more than 1
PC using the same CD. If you do so anyway, the 2nd PC
refuses to operate after 30 days. (So those who want it
on both their laptop & home computer will have to buy 2 &
get a 10% discount on the 2nd one from microsoft.)
The activation info is sent to microsoft's database via
internet. If you have no internet, you'll be forced to
call microsoft & type in a bunch of numbers onto your
computer. It detects your hardware components & settings
so there's no way to truly fool it.
J&J