Using of A/D converters at PicoCOM4 without Touchscreen

Hello,

we want to use PicoCOM4 without LCD / Touchscreen, but we need at least 2 A/D converters for measuring of different signals. According to documentation the 4 pins for Touchscreen (X+, X- ,Y+, Y-) can be used as A/D converters alternatively. Are there any drivers (WIN CE 6.0) available for that? And (if so) where can we get it?

Thanks in advance