I would like to know that also,
I am going to build something that goes in my car that will have an LCD
screen
and a keypad, but if I could use the LCD itself instead of a keypad for user
input
 that would simplify things dramaticly  for me, considering that i have
limmited
dash space.  all I need is a screen that can be divided into a 4x4
grid....each
 grid space sould have a button drawn it it on the screen, and if your
finger
 enters that grid area then the pic thinks you have pushed the button...
maybee
there is a simpler way to do this than with a touch screen...maybee IR
 leds and detectors or something.

anyway if anyone finds a source of them let me know please,
thanks,
Ryan

>Has anyone got any experience with touch screen LCD displays? If so what
are
>the cheapest sources and the easiest way to hook them to a PIC. I would
>assume they have a bi-directional serial input/output.
>
>Shahid