its a digitizer screen so you need to use the pen. but, I have a touch pad attached to the cubby box with some hotkeys. Its got a 40GB HDD so it holds memory map fine. I have just bought a 500GB rugged Hitachi drive which im loading with my music for our next trip along with maps and it will hold our photos to.
keep it cool? its doing fine, but i guess i could open the vent infront of it if it starts heating up. I know a chap who has the same model and its returned fine from over 11 sahara trips.
G