2003 Chevy Caprice confused???

I am attempting to change the rear break pads and rotors to my 2003 chevy blazer. how do i deal with the parking breaks. do i have to disassemble the parking breaks in order to replace the disc? if so, then how do i go about doing that and is there a special procedure to reassembling the parking break? if you have pictures that would be a huge help. thank you