If you haven’t downloaded this update.. You really should..

this f release of the update, focuses on bringing the HTML5 support up-to-date, adding CSS 3 support and bring more new API’s to the JavaScript intellisense. Updates will be every 3 months to keep Visual Studio updated with the changes made by W3C. This works with Visual Studio Express as well..

http://visualstudiogallery.msdn.microsoft.com/a15c3ce9-f58f-42b7-8668-53f6cdc2cd83