Developers interested in using speech technologies in their applications have been downloading the Windows SDK, but not everyone has been able to find our sample code after installation. If you’ve installed the latest Windows SDK, you’ll find the speech samples under “C:\Program Files\Microsoft SDKs\Windows\v7.0\Samples\winui\speech”. Of course, if you didn’t use the default installation location or your root drive isn’t C: you’ll need to adjust for that.
Note that the Microsoft Windows SDK for Windows 7 supports SAPI 5.4. The 5.4 version of the Speech API is largely the same as 5.3, but to see what‘s new go to the Speech Technologies node on MSDN and follow the SAPI 5.4 link.