http://msmvps.com/blogs/docxp/archive/2008/07/18/1641331.aspxThe Windows Media Center TV Pack was released on July 16, 2008. Not all computers that are shipped by hardware vendors in the retail channel have the Windows Media Center TV Pack installed. APPLIES TO : Windows Vista Ultimate Windows Vista Home PremiumenCommunityServer 2008.5 SP2 (Build: 40407.4157)