Just to repeat using more keywords:

Nuance's Dragon Naturally Speaking Preferred 9.10 works in Office 2007
products. It integrates fully with Outlook 2007 and Word 2007. As a bonus, it
takes less training time and so far it seems to be much more accurate than
the SDK 5 engine. The time from spoken word to printed text is a little long
at first, but it decreases as the program builds its archive of user
characteristics and word use and style.
I am a shipboard electrician in the U.S. Merchant Marine and I have computer
skills only slightly more advanced than those of a caveman. (Oops! Don't tell
the GEICO guy I said that.) I succeeded in installing and training the
program well enough to begin using it in less than an hour.
I'm sure there are other solutions out there for those of us who won't be
using Vista for a while yet; this fix to the loss of Speech in Office 2007
works for me.
Good Luck.
Robert