On your Sport, the keyless code is on a sticker on the module located ahead of your jack. Open the compartment, and you'll probably need a flashlight and mirror, and you'll see the number on a sticker on the module in there.
Your inoperative horn and cruise is most likely a failed airbag clockspring...The coil of wires that connect all the steering wheel mounted controls like the cruise, horn, and also power to the airbag. In time, they'll sometimes wear out and break. They're not too bad to install, but I'd maybe suggest a body shop or Ford dealership do the job if it's something you're not familiar with. You'll have to remove the airbag and steering wheel to access the clockspring. From there, it's just plug-and-play to install the replacement.
