Another very useful program is TextAloud. This program is designed to allow you to use speech to read Word files, text files, email, Web pages and PDF files. You can use the SAPI 4 and 5 speech engines (you can download them from here: sapi51.msi), or you can purchase a wide variety of commercial speech files which are linked on the NextUp site where you can find TextAloud.
One of the neatest features of TextAloud is the option to convert the text you wish to read to MP 3 format so that you can burn it to a CD or put it on an MP 3 player and not be tied down to your computer when you want to read your document! I also discovered, quite by accident, that you can just use your screen reader voice to read the files in TextAloud! Here is the link: NextUp.
While you are visiting NextUp, you might want to take a look at some of the other programs with speech that they have in their repertoire. BTW, TextAloud is not free, but it is only $29.95 which I think is very reasonable.