User accounts have a much more prominent role in Windows XP than they've had in any previous version of Windows. Microsoft faced an interesting challenge with the release of this product, in that support for multiple users is typically a feature of server-type operating systems, and is often seen as a feature used only by network administrators. Since Windows XP is supposed to be a robust, networkable operating system, healthy support for multiple user accounts is a must.
But Windows XP is also intended to be suitable for so-called "home" users, who typically have little or no interest in user accounts, administration, or security. Whether or not Microsoft found an appropriate balance between the high level of inter-user security administrators demand, and the streamlining and simplicity that single users expect, is really a matter of perspective.
Support for multiple users is built into Windows XP from the ground up, which is one of the advantages of the Windows NT/2000/XP platform over the older (and now-defunct) DOS-based platform used by Windows 9x/Me. (See Chapter 1 for more information.)
On its simplest level, multiple user accounts can be used to allow each member of a household or each employee in an office to have his or her own set of documents, display settings, application settings, Start Menu programs, and even Desktop icons.
But proper use of user accounts can also protect your computer from unauthorized intruders, whether they are sitting at your keyboard or connecting remotely from thousands of miles away. Having separate user accounts for each person allows them to protect their personal and sensitive documents from other users on the machine, as well as from other computers in a workgroup.
The solutions in this chapter not only show you how to set up and manage user accounts, but use them in conjunction with file and folder sharing to strike the balance between security and convenience that works best for you.