Zubair Alexander (MCSE, MCT, MCP+I, CNA, A+, Network+, CTT+, CIW) works as a trainer and consultant in Seattle, Washington. He has a passion for technology and his writing skills reflect his extensive training background based on his real world experience. Zubair is a Microsoft EST endorsed trainer and trains Microsoft Consulting Services and Microsoft Product Support Services (PSS) engineers. He also writes Professor Windows columns for Microsoft TechNet and has been involved in writing Windows 2000 exam questions for Microsoft. Zubair teaches Microsoft ISA Server 2000 and other BackOffice products and has written extensively on Microsoft products for several years. He reviews technical books and articles for various publishers and has recently co-authored a book on Windows 2000 networking services. He also speaks publicly at technical seminars and conferences.