If you're thinking about voice recognition software to give your hands a break, here's a recent article on Dragon NaturallySpeaking (the program I use): "Innovations: This Dragon responds -- with a little training" It just covers the basics, but if you're new to voice recognition, it's a place to start.
"Dragon NaturallySpeaking is an add-on software that you can use on your desktop system or on your PDA. In addition to a highly accurate speech engine that runs on your desktop, this package comes with a speech recording application that runs on your Pocket PC or Palm device. So you can carry it on a plane to transcribe while you're on the road.
Like Microsoft's integrated speech recognition software, you need to train Dragon, which you can do by reading interesting chapters from popular books. So don't expect to open the box and use the product."