Hi. I have been onthe email list for a long time but this is the first time I need help. I braille books for students in Connecticut using Duxbury. I just received a new computer with a new keyboard and it does not have the 6 key entry feature. Can you recommend any keyboard brands or models that will allow me to use my keyboard when I am working in Duxbury so I don't pruchase a few, bring them all home and try them out to find out which one works . Thanks so much.