Enter the 25-character product key, which is located on the sticker on the back of the Windows XP CD case. You must have a valid product key to complete the installation.
As Windows XP Professional will be expecting this computer to be part of a network a NETBIOS name for the computer is required. As part of any network environment there should be a computer naming policy, for example the location of the computer could be used. You will be asked to assign an administrator password which, unlike 2000, can be left blank if it is to be used by only one person and as a stand-alone PC. For use other than home use, a password should always be assigned and the account only used for administration purposes.