Are you worried about getting oil on your hands? :p It's pretty easy. Just drain oil and put new oil in along with unscrewing a filter and...
The chart here should help: http://www.therangerstation.com/tech_library/ManualTransmission.html
Is it manual or automatic? Is this the first time you've changed the fluid? What fluid did you use? Are you sure it's filled to the proper level?
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