Mark Minasi, MCSE, is one of the world's leading Windows authorities. He teaches classes in 15 countries and is a much sought-after speaker at conferences and industry gathering keynotes. His firm, MR&D, has taught tens of thousands of people to design and run Windows networks. Mark has written or cowritten numerous books, including the popular Mastering Microsoft Windows Server 2008 R2 and The Complete PC Upgrade and Maintenance Guide. Twitter: @mminasi