I have gone through the files including the reader and the .ini but I cannot find a list of keys so I can store evidence in my trunk. Also how do I use the field test kits?

When standing next to the back of your car press your menu key (The one you use to do FST's: Default is T) and there will be a store evidence options. Once you have stored evidence it will say, depending on what you stored, that tests a available.