About the Author

Mike Alexander is a Microsoft Certified Application Developer (MCAD) and author of several books on advanced business analysis using Microsoft Access and Excel. He has more than 15 years experience consulting and developing Microsoft Office solutions. Michael has been named a Microsoft MVP for his ongoing contributions to the Excel community. In his spare time he runs a free tutorial site, www.datapigtechnologies.com, where he shares basic Access and Excel tips with the Office community.

John Walkenbach is a leading authority on spreadsheet software, and principal of J-Walk and Associates Inc., a one-person consulting firm based in southern Arizona. John has received a Microsoft MVP award every year since 2000. He's the author of more than 50 spreadsheet books, and has written more than 300 articles and reviews for a variety of publications, including PC World, InfoWorld, PC Magazine, Windows, and PC/Computing. John also maintains a popular Web site (The Spreadsheet Page, http://spreadsheetpage.com), and is the developer of several Excel utilities, including the Power Utility Pak, an award-winning add-in for Excel. John graduated from the University of Missouri, and earned a Masters and PhD from the University of Montana.

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