Srinivasa Sivakumar is a software consultant, developer, and writer. He specializes in web and mobile technologies using Microsoft solutions. He has co-authored Professional ASP.NET Web Services, ASP.NET Mobile Controls - Tutorial Guide, .NET Compact Framework, Beginning ASP.NET 1.0 with VB.NET, Visual Basic .NET Threading Handbook, Beginning ASP.NET 1.0 with C#.NET, Professional ASP.NET Security, Professional ASP.NET Web Services with VB.NET, Professional .NET Network Programming and The Complete Visual C# Programmer's Guide and written technical articles for ASPToday.com, CSharpToday.com, .NET Developer, etc. In his free time, he likes to listen Tamil sound tracks especially one's sung by Mr. S. P. Balasubramaniyam. A list of his published materials are available at www3.brinkster.com/webguru