i've non-unibody 2.4GHz model 15" that still has few months left with apple care. It's the notorious 8600M GT video problem. Is seems the VGA died. Is there a good way to present this and get a new laptop rather then replaced system board ??? Do i want to just walk into apple store and ask for replacement ? How does it work ? I've never had hardware failure before. No experience how to go about this. Advice ?