USB-UIRT for disabled

I develop tech items for disabled persons. I have a tablet-like PC (XP) that I wish to attach a USB-UIRT to. I need to have a very simple on-screen keypad that disabled people can touch (true touchscreen) to operate IR stuff.
So I need something simple. I would assume I need:
USB-UIRT hardware
Driver
Girder?
Sage?
Please cc: rjc@rjcooper.com when replying?
Thanks!
RJ
So I need something simple. I would assume I need:
USB-UIRT hardware
Driver
Girder?
Sage?
Please cc: rjc@rjcooper.com when replying?
Thanks!
RJ
