by Gecko » Mon Apr 06, 2009 1:13 am
There is what is commonly referred to as "In-Place Upgrade" or "re-installation" that can also be done from an XP cd.
But this will only work right if your windows XP cd has the same service pack version as the system currently has.
If the system has SP3 installed and the XP cd is SP2 then you would have to uninstall SP3 first and then do the "In-Place Upgrade"