Over the last ten years, he has provided consulting services in B2B, B2C, B2E, data integration, and portal initiatives for banking, retail, accounting, manufacturing, and financial services. An early technology adopter, he frequently evaluates, recommends, and helps his clients use new technologies effectively. Bill has designed and helped build several award winning software packages. Bill is the co-author of O'Reilly's ADO.NET in a Nutshell and author of ADO.NET Cookbook. is President of ProseTech, a software documentation consultancy, and a project manager at VoiceIQ (http://www.voiceiq.com/), a provider of software for interactive voice-enabled applications and services. Matthew is a coauthor of the ASP.NET in a Nutshell (O'Reilly), and a contributor to the C# in a Nutshell (O'Reilly) API reference.