NE1 mount a laptop in a grand caravan?

I just bought a new laptop with a DVD player. We are going on a long trip over spring break and I was wondering the best way to rig up the laptop so the kids can watch movies. I've got quad seating in a 96 Grand Caravan. It needs to be secure and well ventilated. Please let me know if anyone has set something up before. Thanks.

I used two pillows and placed a shelf from our entertainment center that wasn't being used. The pillows I believe helped with the shock absorbtion and the board (shelf) enabled the laptop to ventilate. I also bought an adaptor that is generally used to run a personal cd player into the car stereo ($14.95 at Walmart), it looks like an audio tape with a cord attached that plugs into the headphone jack (laptop should have this on the side). This enabled the van speakers to dispurse the audio from the laptop. You should also use an inverter to power the laptop since using the DVD option tends to run the laptop battery down alot sooner than regular use. I purchased a 70watt inverter from Target for $19.99 (laptops don't require as much electricity).