I read as many threads as possible on three piece dashboard removal and attacked the job today.
I found the threads with pics to be most helpful. I think it was pho23 that had a some great pics and I gave his DIY thread titled "Removing a 3 piece dash." dated oct 28 2007 thread 5 Stars.
i followed the steps he described in the thread and found no issues with the instructions at all.
Here are the things I broke in the process.
1. Air vent hose to plastic dash vents.
2. Tabs on the plastic dash vents.
3. A couple clips pulled off the dash and stayed in the car.
My advice is to go slow to a avoid the mistakes I made.
here are the pics