AH! I didn't know about the screw. That's the reason I couldn't get it apart the other day when I replaced the battery. Thanks man. :beer:First you separate the whole thing, where the key sits when its closed there is slot that you put a scredriver in and twist, then the key portion and the remote portion will slide apart. Thats how you replace the battery as well, after its slid in half then you can pop the remote part in half and change the battery.
To take the key off (after its split in two parts), under the ford emblem there is a screw, take the screw out and then you can take the part where the key is in half. Not a lot to it, there is a spring, button and key part, also the transponder chip is in there.