Make sure the application for the file type (.aspx) is installed

After I created new WebSite in VS 2005 I'm getting this error

---------------------------Microsoft Visual Studio---------------------------
There is no editor available for 'C:\Documents and Settings\Administrator\My Documents\Visual Studio 2005\WebSites\WebSiteUpload\Default.aspx'.
Make sure the application for the file type (.aspx) is installed.
---------------------------OK ---------------------------

Solution:
run from a Visual Studio Command Prompt, type "devenv.exe /setup" and then "devenv /resetskippkgs" (without the quotes)