I think I know what you're referring to. It's not really a driver per se, it's just a few dll files. You put them in the folder of the application that can speak through System Access, and these files will make it so that it talks through NVDA instead. Entombed would be an example of this, and I have actually used this trick and can confirm that it works. Is this what you're looking for?
Perfectly balanced, as all things should be.
"Cause in a game of life or death, you either live, or you die."
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