Take some time and read the massive thread on that LCD.
All of your questions will be answered.
I'm sure we've all heard of this samsung screen on ebay:
My question, however, is whether or not it is worth it to have a capacitive screen or to just go with resistive. It is my understanding that there is more of a glare with capacitive screens. What would you recommend? I need to mount the screen in a double-din bracket, and I'm trying to keep this as cheap as possible.