Don't see CSS 3.0 in the validation dropdown

I have 2010 Visual Web Developer on a Windows 7 64-bit machine. I downloaded the CSS3 Intellisense Schema 
which the css30.xml file I placed in the directory 
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Packages\1033\schemas\CSS 
and when I load Visual Web Developer I don't see CSS3 in the validation dropdown which only has


Internet Explorer 6.0

CSS 1.0

CSS 2.0


I don't know if something has to match with the registry in the directory that links to the csss30.xml file.I am trying to install the 
intellisense plugin which I am creating a site with CSS3.

http://visualstudiogallery.msdn.microsoft.com/7211bcac-091b-4a32-be2d-e797be0db210/view/Discussions

Any solutions?