Steven Cheng is a senior support engineer at Microsoft Global Technical Support Center where he has been supporting Microsoft software development technologies for more than 5 years. Currently, as a community leader, he is working actively in the MSDN newsgroup and forum communities.Steven Cheng's technical specialties cover many popular areas of Microsoft development technologies including .NET framework, ASP.NET, XML WebService, Windows Communication Foundation, SharePoint development, and so on. His blog can be found at http: //blogs.msdn.com/stcheng.