Microsoft only allows ONE registration of a key; when you
bought your original system, the Office XP Basic key was
registered with Microsoft and deemed unuseable for any
other machine. Granted, you own the software and are
placing it on one machine, but Microsoft doesn't know
that (they think they're being ripped off; like they
don't have enough money already).
Either pony up and give Microsoft more money (ie. buy
another copy of Office) OR download a crack.
good luck.
-----Original Message-----
I bought a new computer with Win XP and Office XP
Basic. I needed a better Office XP so bought Office XP
Pro, Uninstalled Office XP Basic and installed Office XP
Pro. I was not using Office XP Basic, so when my
daughter upgraded her laptop to Win XP, we installed the
Office XP Basic. Microsoft would not allow it to be
registered. What should I do?