Read original post by Karthikeyan Anbarasan at F5 Debug
This article is going to be the first of the 31 days series on Windows Phone 7 Development, in this article we are going to see what Windows Phone 7 is and what are the hardware and requirements for developing a Windows Phone 7 Application and also we are going to see the software development kit used to develop the application with Visual Studio 2010 IDE.
Windows Phone 7 applications are build on existing tools from Microsoft like Visual Studio 2010 IDE, Expression Blend, Silverlight and XAML code.