What is the difference between Silverlight 1.0 and Silverlight 2.0?
Silverlight 1.0 is a cross-browser, cross-platform plug-in allowing rich media experiences and interactive applications for the Web. Silverlight 2.0 extends the 1.0 plug-in by also including a light-weight .NET framework. This light-weight .NET framework supports the C# and Visual Basic programming languages.