If you've tried Pasmal's code and you're still having trouble making it work, you may need to do some voice training. Here's how.

(Note to lurkers: The labeling of options are slightly different for newer Windows OS's.)
1. Open Control Panel, then double-click Speech. If you don't see the Speech control panel, download it at http://www.microsoft.com/msagent/downloads/user.asp.

2. Select Microsoft Speech Recognition Engine 4.0 (English), then click Training.

3. Pick one of the readings, and follow the directions.

The more training you do, the better voice commands will work.

Best of luck smile