Target Silverlight Version is stuck

I have my shiny new Visual Studio 2010开发者_如何学JAVA. I want to develop a Silverlight 4 web app with it.

I made a project and it told me that I needed to update my Developer version of Silverlight. I followed the link provided and did what it suggested.

I then went back and created my project (under a different directory).

But when I try to select the target version of Silverlight all I can see is Silverlight 3.

What do I need to do to get this to show the Silverlight 4 option?

Make sure you've installed the Silverlight 4 Tools to enable this all in VS 2010.