Here you go, a guide for the easy way to do this mod.
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Thanks to Pirana, Natey, and ChopstickHero for the original info.
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The only tool I needed was a Philips screwdriver.
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First raise the steering wheel to its highest point
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Locate and remove the three screws holding the casing together.
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Pull the release lever out of the way. Then pull the casing apart by pulling down on the back of the casing.
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Once open locate the key-assembly, and the small two pin connector vertically plugged into the assembly.
It has a blue wire and white wire.
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Pull this connector out.
I did this entire mod with the power on, and the chime running.
The second I pulled this out my chime stopped.
(I had to use my inverter to power the camera, as I couldn't find any damn batteries)
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Put the casing back together.
And the screws back in their places.
(Black screw is towards front of car)
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Done, feel free to blast your music with your doors open.
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This took me less then 10 minutes to complete, including taking pictures.
The hardest part was that the little green filter on the key-light fell out and it was hard to get to stay back in place.