Computer users wtih Microsoft Vista or Windows 7 have WSR (Windows Speech Recognition) built in at no cost. To take advantage of it, Read, "Getting Started with Windows Speech Recognition" found at:
http://www.mymsspeech.com/download/WSRGetStarted.pdf
eMicrophones has an inexpensive (free to people with certified disabilities) WSRToolkit V2. This adds features like easily creating text and command macros and improving accuracy etc. See this at:
http://www.emicrophones.com/p-3033-wsrtoolkit-version2.aspx
For a more mature software, although expensive, Dragon Naturally Speaking is somewhat more accurate and if you can use your hands, faster to make corrections.
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