Bill Jelen is an Excel expert at www.mrexcel.com and the author of numerous books, including Excel Gurus Gone Wild, Pivot Table Data Crunching, and several titles in the Excel for Professionals series. He lives in Akron, Ohio. Kevin Jones has been building applications in too many languages for too many years starting withIBM mainframe Basic Assembly Language. He is known for his ability to use Visual Basic to get Excelto do the most unusual and unexpected things. As “zorvek” he has answered close to 10,000 questionsabout Excel and Visual Basic on various online forums. NASA wouldn’t take him so he spendshis free evenings with his daughter Emily at the theater watching 3D superhero films. Tyler Nash is currently pursuing her Master’s Degree in English and Philosophy. She is the Copy Editorfor Holy Macro! Books. Outside of a love for learning, Tyler also enjoys playing the Didgeridooand road trips. Tom Urtis is owner of Atlas Programming Management (www.atlaspm.com), a Microsoft Office businesssolutions company specializing in Excel project development and training. Tom also created theExcel Aptitude Test (called XAT, xat.atlaspm.com) to measure Excel skills and know-how. WhenTom’s not at the computer, he enjoys the outdoor life that California offers, and the diverse cultures ofthe San Francisco Bay Area where he lives.