I imagine your epiphany must have been felt equally by your pupils too. For them to be able to interact fully with a computer in a manner that is more accessible must have been wonderful for them and for you to be a part of.
This sounds great for a number of pupils in my school who struggle to access technology in the more traditional ways.
Tony, what an inspiring insight to education outside of main stream. I agree with Alan, what a wonderful tool you have included for the pupils. I can only imagine with technology progressing at such a fast rate that the systems you have in place will continue to enhance your pupils experience. =]