Eric Beehler has been working in the IT industry since the mid-90s, in roles ranging from help desk technician to enterprise solutions provider. He holds CompTIA A+, Network+, and Server+ certifications, as well as multiple Microsoft MCITP, MCTS, MCDBA, and MCSE certifications. His books include MCITP: Microsoft Windows Vista Desktop Support Enterprise Study Guide. Eric S. Johnson, is co-founder of Consortio Services, is a Microsoft MVP for SQL Server and co-author (with Joshua Jones) of A Developer's Guide to Data Modeling for SQL Server. Joshua Jones, Database Consultant with Consortio Services, has worked extensively in Windows desktop and server support.