How do i change the spare tire on an infinity qx4 1999?

i cant figure out how to take the spare tire off from under neath the car. can some1 tell me word for word. thankyou.How do i change the spare tire on an infinity qx4 1999?You should have a tool pouch that should contain what you need to remove it or at least most trucks that have the spare stored under the vehicle have a long rod that gets put into a hole and the spare it lowered to the ground as you crank it.