I am unfamailair with the setup you are referring to. Do you need USB || Serial? Cased || uncased? I just traded a microtouch serial controller not long ago for a shutdown circuit. If you want to try and just buy the controller out of pocket, you can snag one for about $100.00 from the following site, but it does not include the Capacitive screen that you will need to go with it.
If you want to use the USB controller, and you need the drivers for Linux, just give me a yell. I have been maintaining my own kernel patch which adds this driver to the Linux Kernel (2.4.18). It is working great in my setup. Specifically, I am using 14-206 (14-205 is the cased version)