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Using Voice Typing (Speech Recognition) and Voice navigation in Windows
http://www.vistaarticles.com/articles/552/1/Using-Voice-Typing-%28Speech-Recognition%29-and-Voice-navigation-in-Windows
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Published on 05/1/2011
 
Try telling Vista what to do instead.

Using Voice Typing (Speech Recognition) and Voice navigation in Windows
Tired of typing text into documents and weary of pushing a mouse around to navigate folders? Try telling Vista what to do instead. The Speech Recognition tool, in conjunction with a headset that includes a microphone, means you can do just that. You need to complete a tutorial so that Vista can ‘learn’ your voice and we have to say that it works far easier for dictating text into a document than actually controlling Windows, but it’s definitely worth checking out.