introduction: many of the people on this board (including me) are using (or going to use as is in my case) VIA EPIA Motherboard with processor speead ranging from 500mhz to 1 ghz. Of course you could use a celeron, P3, P2, P1, AMD, whatever fulfills your needs. Personally i found EPIA M10000 the best one for me (energy efficient, less heat), so my first suggestion
part 1: any up-to-date OS will do for the setup. ME(MediaEngine) runs on Windows platforms. You could install Win2k lite ( for windows lite) or XP, even 98 will do it. If you know what you're doing you will be able to speed up the computer. Not sure about CE. As I said ME runs on Windows platform so it is NOT a OS. So yes, you WILL need an OS in order to run ME. If you put ME's shortcut to Start Up you won't need to click on it when Windows boots up. It will be run automagically.
part 2: if you run the computer when the car is on and have a working alternator it is fine. If you just run it off your battery, i dont know how long it'll last (not too long).
Do a for dc-dc power supplies, opus solutions, etc.
Visit this first: Frequently Asked Questions
Opus psu's will let you do that - boot up/down with the car. they are pricey however. Also, you will need to hook it up to the ignition wires.
Additional readings recommended :
Do on :ghougle:
Do on www.mp3car.com
Do , cuz most of these questions have been answered many times.