Here is the procedure for replace the dryer. Keep in mind you will need to evacuate the system before and after and pull it into a vacuum after you are finished. You need to make sure you do this after because you have to get the moisture out of the system or it will damage the compressor.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.