thanks for the input

.. I am going to check out OS VR.
From the reading around I've been doing, voice recognition works best if there is a limited amount of possible input. VR comes included with W7 and I have written a game that I can run with it, but there are some challenges. I have made a location with a couple of buildings and I can navigate through the location and enter the buildings using W7's VR, but not using the type of natural language I would like my students to practise. You say, for instance, 'mouse grid' and windows displays a grid overlay. You then say a series of numbers until the target position is located and then say 'click' to enter the location - W7 provides this functionality - as a first pass, I'd like to turn all this
number saying into a more natural command such as '
go to the store', or perhaps better '
I need/want/have to go to the store'. And then, once at the location, have the user complete tasks, such as buy the groceries, through VR commands. If anyone has any idea how to do this, I'd value some pointers - thanks ...