Custom voice cmds

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Hi all - i have an app its pretty basic but does what i need on my pocket pc 2003 pda (ipaq 4150)

Now id like to add some voice commands to this app.

as an example i have say 4 cirles on the screen each assigned a letter if i use the pda keyboard and hit 1 it will select the first circle - 2 for the second etc ..and i use space to deslect ..


now id like a bit of software that i can program to do the same sort of thing using just my voice - maybe i can map a voice command to a certain letter/number on the keyboard so when i say "ONE" it selects the first circle - or something like that

So i was wonderng if anyone could steer me in the right direction

Thanks in advance

i have tried MSvoice command but it seems i cant customise it enough and can only do what it is programed to respond to.