XBMP (XBox Media Player)

Hi,

I'm interested in hooking up XBMC to an lcd screen, and
am wanting to use a touch screen to navigate.

I understand touch screens emulate mouse functions, but
require drivers for windows/linux/mac whatever in order
to work.

I'm wondering is it possible to add support for USB
touchscreen input devices, or is each touchscreen
interface different and proprietary?

Thanks