Rupp, there is a sticker on the bottom/side of the PC with the XP Key. It's the top one, not the 1-2 Processor one, as I found out. (See attached photo, use the one highlighted in gerrn and you should be good to go)
Does anyone know why there are 2 key's on the sticker? Is one for the 64 bit XP version?
I guess it is the luck of the draw, the one I received is in new condition, opening it up there was not one spec of dust.
As I am going to be using this for a CarPC, I wish I could get my hands on a 10" Airpanel! The ones on eBay are now going for over $450!!! I have a 15" one in the living room (That I payed $180 for on eBay about a year ago) Even 10" is a bit large for in the car, but would be very nice for easy removal, or for passangers to use it on their laps ect.