i have a used palm zire 71 pda with some rc excel based programs on it. if you have excel and documents to go your options are endless. it has a 256mb sd card.
use as is or cutomize your own programs for the track.
$100.

if your a gear head i also a auterra program and cable to hookup to your car.
see all kinds of data and check dtc's.

tj towne

ttt. thanks