Yes. Please install the appropriate Voice Engine according to the language you require, which could be downloaded at
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=10121
The Voice Engine should support SAPI5 which defines an XML markup for specifying grammar, as well as mechanisms to create them dynamically in code, for example, AT&T Natural Voices, Cepstral Voices or NeoSpeech Voices.
The followings are the high quality Business Voice Engine: