If you have WM6 then you should have the latest VoiceCommand. Sorry, there's only 1 voice. As far as what you can use it to do, look here:
http://www.microsoft.com/windowsmobi...tutorials.mspx
As far as Flash, have you installed the latest flash support for WM? Look here for Flash Player 7 for PPC:
http://www.adobe.com/products/flashp...ds/player.html
Can't help on Remote Desktop as I have not attempted that one yet.