Easy. The fronts are just about the same as any other disc brake. Remove the caliper, the rotor will either slide off, or there will be little clip washers on the wheel studs holding them on, I just twisted mine off with a pair of pliers. Once the rotor is off take the pads out, open the cap on the master cylinder and use a "C" clamp to retract the piston into the caliper housing. (if your master cylinder is nearly full it may over flow so you might want rags or a container to collect the spillage) Then put the new pads in and re-assemble.
The rears come off pretty much the same way. Once the old pads are out, you'll need to screw the piston back in on the caliper. You can use a pair of beefy needle nose pliers, but if you want to, there is a special tool for the job, its looks like a 1.5" square with little nubs sticking out of it. (most auto parts stores have them and if you tell them what you are doing they might think of the tool) After the piston is turned in the new pads can be put back on. Check the fit over the rotor, if its loose, screw the piston out a little and check again, you want the caliper with new pads so fit snugly over the rotor.
