There are two 19mm bolts that hold in the front caliper. The caliper should then slide off to the side, with some force. Be sure not to leave the caliper 'dangle' or hang by just the rubber flex brake hose.

I would remove the two pins holding in the pads before taking off the caliper though. I used a hammer and a good sized nail for this. Also, you may need to compress each piston of the caliper using the old pads and a "C" clamp before the new ones will fit on with the new rotors.

After the caliper is removed from the rotor and supported in such a way in which it is not hanging from the rubber flex hose, you will need to remove the rotor/hub assembly from the spindle. To do this, remove the dust cap, loosen the allen head cap screw and unscrew the large nut-like object that holds the bearing in. It will be really greasy. After that is off, you can take out the bearing and remove the rotor/hub. Then you need to remove the rotor from the hub. This requires removing the (I think) 5 allen head screws from the back of the rotor. Separate the parts. Clean everything up.

Put the rotor and hub back together. Put the hub/rotor assembly back on the car. Repack the bearing with new grease. Tighten down the nut that holds the bearing in, to the point where the wheel still spins rather freely, but there is little to no axial play. Install dust cap (with light taps of the hammer) Install new pads. Install caliper assembly onto new rotors. Put the wheel back on, lower the car, and torque the lug bolts.

Your done...

Its a lot easier than it sounds... really.