Can anyone tell me the best way to replace the A/C drier? thanks!

 

Have you posted the question in the appropriate XJ section? You would probably get more answers on your question than here. (Or ask the moderator to move the question for you.)

 

Once your AC system is discharged it is very simple. First you must remove the grill on front of the car. Very easy. Only four screws. You will then find the dryer canister mounted on top of the condenser. Replacing it is just a matter of undoing it and putting another one in its place. Easiest job in the AC system.