Diane Koers owns and operates All Business Service, a software training and consulting business formed in 1988 that services the central Indiana area. Her area of expertise has long been in the word-processing, spreadsheet and graphics area of computing as well as providing training and support for Peachtree Accounting Software. Diane's authoring experience includes over forty books on topics such as PC Security, Microsoft Windows, Microsoft Office, Microsoft Works, WordPerfect, Paint Shop Pro, Photoshop Elements, Lotus SmartSuite, Quicken, Microsoft Money and Peachtree Accounting, many of which have been translated into other languages such as Dutch, French, Bulgarian, Spanish and Greek. She has also developed and written numerous training manuals for her clients.; Ruth Maran is one of a select few North American authors who can claim over 10 million books in print. Ruth has written bestselling user guides in a number of different computer topic areas including Windows, Access and Mac OS X.
