you might sell that apple at the event for a decent sum, depending on it's makings, and if there are any apple enthusiasts around. plug it up and turn it on, see if it workswrite down anything it tells you about the system
you're right about separating the CPU from the heatsink and covers. You might possibly sell the DVD and CDRW for a couple bucks each? who knows, make the DVDRW a bit higher. I'm not sure about the hard drives, you might be ok to sell them there too, but remember if they were from someone's personal PC it could contain personal information, and treat them accordingly
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