使用Silverlight（C＃）和旧版ASP.NET（VB.NET）代码的主页

I'm working to include Silverlight functionality in a legacy web application based in VB.NET. With the change we are also switching from VB to C# (all new development is C#, so I need a C# answer). I'd like to use some form of master page where the content area can house either a silverlight control or a legacy module/page. I'm working to include Silverlight functionalit