carriage in udk


i’ve created a carriage and i want to add it to udk so how can i do it in terms of scripting
the joints of the carriage are the following :
joints for the horses
body joint
2 joints of the front tires
2 joints of the back tires
joints of the metal bar connecting the horses and the car carriage .
so how to add that carriage in udk and the scripting also
in addition is there any editing should be done to the rigging .