About the Author Bill Ferguson-- MCT, MCSE , MCP+I, CCSI, CCNA, A+, Network+, Server+, Security+, VCP4, VCI4 --has been in the computer industry for more than 20 years. Originally in tech- nical sales and sales management with Sprint, Bill made his transition to Certified Technical Trainer in 1997 with ExecuTrain. Bill now runs his own company (Parallel Connections) as an independent contractor/author in Birmingham, Alabama, teaching classes for most of the national training companies and some regional training companies as well as inter- national classes and virtual (online) classes. In addition, Bill writes and produces technical training videos for Quickcert, V TC , and Palaestra Training Company. He has written video titles including A+, Network+, Windows 20 0 0 Management, Windows X P Management, Windows MCDST, and Interconnecting Cisco Network Devices. In addition, he wrote the Microsoft Certified Desktop Support Technician (MCDST) Study Guide, the previous Network+ Review Guide, and the Network+ Fastpass books for Sybex / Wiley Press. Bill says, "My job is to understand the material so well that I can make it easier for my students to learn than it was for me to learn."