Evan Callahan is President of Callahan Software Solutions, a consultancy focusing on database and other software solutions and technical communications. Clients have included Microsoft, General Dynamics, Online Training Solutions, and a variety of accounting, real estate, and environmental firms. He is the author of Troubleshooting Your Web Page and Microsoft Access Visual Basic for Applications Step by Step, published by Microsoft Press. Evan worked for Microsoft Corporation from 1989 to 1995, where he created documentation and sample applications for Microsoft Access and Visual Basic. His background includes extensive experience in database design, technical communications, web-based marketing, and management.