ASP.net MVC 3 project files not showing up in new project dialog?

I installed ASP.net MVC 3 on my dev machine yesterday using the web-based installer, did a clean reboot, etc.

The MVC 3 projects still don't appear in my New Proje开发者_Go百科ct dialog, only the MVC 2 ones. Am I missing a step?

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The answer (in this case): Make sure you have the .net 4 runtime selected at the top of the new project dialog.

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If you're using Visual Studio 2008, it won't show up since it's available for VS 2010 / .NET 4 only. If however you are using VS 2010 and .NET 4, they should appear unless something wonky occurred with the install.