The Ultimarc site mentioned in that link is where I got an I-Pac from and it worked very well with keygrabber. Only thing was, it had no outputs. There is another device called Pokeys (made by Poscope) that can configured to be outputs and analogs as well. I think it runs about $55.00 and there is already a plug-in for it. It would be interesting to see what can be done with the U-HID though.
Brett