speech recognition software
To open it, just go to the “Control Panel”, then choose “Speech Recognition Options”. Then, you might want to go thru the various options and go thru 30 min of training and learning how to use it.
You can use it to control windows and menu in some basic way, but I'd use it mostly for dictation when writing essays and emails. Not sure how well it will work out, but i'll give it a shot.