ok....after enough surfing i found nothing for css3 intellisense in 2008
then i downloaded the css3 schema for 2010
http://visualstudiogallery.msdn.microsoft.com/7211bcac-091b-4a32-be2d-e797be0db210[
^]
then i copied the file from
C:\Program Files\Microsoft Visual Studio 10.0\Common7\Packages\1033\schemas\CSS
to
C:\Program Files\Microsoft Visual Studio 9.0\Common7\Packages\1033\schemas\CSS
and deleted the file css21
and renamed the copied file to css21
and i am good to go....
its working for me!!!