Looks like CSNOW has covered it. I also use the coat hanger technique for supporting the caliper while I work. I use an upside down bucket to hold the caliper when not hanging by the coat hanger. Don't forget to remove the coat hanger from the car when finished, I left it hanging on the spring one day.
Should be a fairly straight forward job, great DIY work.
PS> Always a good time to clean the wheels when you have them off the car.