About the Authors

Bill Jelen is the principal behind the leading Excel website, MrExcel.com. As an Excel consultant, he has written Excel VBA solutions for hundreds of clients around the English-speaking world. His website hosts more than 12 million page views annually. Prior to founding MrExcel.com, Bill spent 12 years "in the trenches," working as a financial analyst for the finance, marketing, accounting, and operations departments of a $500 million public company. His duties included turning large amounts of mainframe data into meaningful reports. Working initially with Lotus 1-2-3 and then Excel, Bill honed techniques to take massive amounts of data and produce meaningful reports in record time. Bill is the author of seven books on Microsoft Excel.

Michael Alexander is a Microsoft Certified Application Developer (MCAD) with more than 13 years' experience consulting and developing office solutions. Michael started his career in consulting and development at the White House Communications Agency in Washington D.C., later parleying his experience with VBA and VB into a successful career in the private sector, developing middleware and reporting solutions for a wide variety of industries. He currently lives in Plano, Texas, where he heads an analytical services group for a $700 million company. In his spare time he runs a free tutorial site, www.datapigtechnologies.com, where he shares basic Access and Excel tips with intermediate users.