Need to Know More?
Microsoft Corporation. Microsoft Windows XP Professional Resource Kit, 2nd ed. Redmond, WA: Microsoft Press, 2003. ISBN 0735619743 This all-in-one reference is a compilation of technical documentation and valuable insider information that computer-support professionals and administrators can reference to install, customize, and support Windows XP.
Mark Minasi. Mastering Windows XP Professional. Alameda, CA: Sybex, Inc., 2001. ISBN 0-78212-981-1. This text gives you all the insider information for the creation of users and groups—and how they interact with a domain. The book also gives a good description of how Group Policies should be used for your XP Professional computer.
Search the TechNet CD (or its online version through http://www.microsoft.com) and the Windows 2000 Professional Resource Kit CD using the keywords "local user", "SID", "Group Policy Objects", "Local Security Policy", "SDOU", "GPRESULT", "GPUPDATE", and "Microsoft Passport".