Windows XP Home and Professional Editions
Windows XP Home Edition
Windows XP Professional Edition
Contains basic support for security among multiple users.
Includes extended support for security between multiple users on the same machine.
Built-in support for peer-to-peer networking, but only for up to five computers.
Better support for peer-to-peer networking, plus support for joining a Windows NT domain.
The backup utility is not installed by default, but is included on the CD.
The backup utility is installed by default.