Preston Gralla, the author of more than 30 books, including Internet Annoyances and Windows XP Hacks, is also a freelance journalist and columnist. He has written for major national newspapers and magazines, including PC Magazine, Computerworld, the Los Angeles Times, the Dallas Morning News (where he was the technology columnist), USA Today, and several others. A well-known technology expert, Preston has also appeared on many TV and radio programs and networks, including CNN, MSNBC, and NPR. In addition, he's won a number of awards for his writing, including Best Feature in a Computer Magazine from the Computer Press Association. He lives in Cambridge, Massachusetts. Robbie Allen is a Technical Leader at Cisco Systems where he has been involved in the deployment of Active Directory, DNS, DHCP, and several Network Management solutions. He enjoys working on Unix and Windows, and his favorite programming language is Perl. Robbie was named a Windows Server MVP in 2004 and 2005 for his contributions to the Windows community and publication of several popular O'Reilly books. Robbie is currently studying at MIT in the System Design and Management program. For more information, see Robbie's website at www.rallenhome.com.