I'd forget about putting Linux on that (for now)
Having a GMA500 graphic card, I'd forget about trying Linux on it until Intel come out with a proper driver. For some details:
http://www.happyassassin.net/2009/01/30/intel-gma-500-poulsbo-graphics-on-linux-a-precise-and-comprehensive-summary-as-to-why-youre-screwed/