You'll need to take a trailer test 'cos you're after 1997, its not very hard but you'll need lessons or instruction/practice. loads of people fail on reversing so make sure you can do it well. After that you need to find out what the towing capacity of your car/4x4 is and then find a trailer that matches the car, then you can see if your horse fits in the weight/height of the trailer. Good luck. it seems a bit complicated but this will stop you getting nicked. See my other posts this evening.