Well I have given it a try, and it works very well.
Windows 7 has 'Windows Speech recognition; alreay installed. but you also need 'Windows Speech recognition macros'
For those that want to give it ago:
http://www.microsoft.com/en-au/downl....aspx?id=13045
The website says the macros software is for Vista but works on Windows 7.
You may need to record a few words for it to work (In 'Windows Speech Recognition'. I was trying 'Dimensional Door' but it kept hearing 'door' as random other stuff .
To record your own words you use 'open the speech dictionary'.
I recorded 'door' and then it understood me. So I recorded 'Grrr' to use with my Barbarian too.
You then use the Macros software to create send key commands.
as a quick trial I used 'web' , 'door' for some spells, 'heal me' (for the hireling to do some work) and also used the 'Grrr' for cleave
The macros are all very simple (and self record - but is quicker to then edit):
my examples:
<command>
<listenFor>Web</listenFor>
<sendKeys>{{CTRL}}{{SHIFT}}1</sendKeys>
</command>
<command>
<listenFor>door</listenFor>
<sendKeys>{{CTRL}}{{ALT}}5</sendKeys>
</command>
<command>
<listenFor>Heal Me</listenFor>
<sendKeys>{{SHIFT}}1</sendKeys>
</command>
<command>
<listenFor>grrrr</listenFor>
<sendKeys>0</sendKeys>
</command>