how do I replace the inside door handle on drivers side?

There is a philips screw yo remove in the middle of the handle trim, then at the top rear part of the handle trim you put a screw driver on the 12:00 position of the "lock button" on the trim bezel and pry outward from the center of the rim. Hard to explain without illustrations. The air conditioning system needs to be evacuated of refrigerant to replace the valve. The refrigerant evacuation and storage requires using special tools then you need gauges and maybe leak detection equipment to do the job properly. Not something to be done at home. There is a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online