Hi,
Ill try and explain as best i can (i will post a pic too as soon as my computerlets me!)
1. Jack up the car and remove the wheel
2. There is a metal spring at the front of the caliper (the bit that holds the pads) Prise this out with a screwdriver.
3. look at the rear of the caliper (ie the bit faceing the engine) At the top and bottom there are two bolts (allen key type) Remove these.
4. The middle part of the calaper should then slide off of the pads towards the front of the car.
5. Remove the pads
6. Use an appt tool or lever to push the piston back into the caliper (to allow for the extra thickness of the new pads) ((be carefull not to force it too far back in))
7. To remove the disks, there are two spigotts (the bits that go in the holes in your wheel to line up the wheel bolt holes) undo these and then with a bit of gentel persuasion the disk should come off.
8. Plave the new disk back on the hub and do up the spigotts (remember to clean the disk with some brake cleaner to remove the film)
9. Place the new pads either side of the disk and apply some copper greese to the rear of the pads
Place the caliper back over the pads.
10. Do up the top and bottom bolts
11. replace the spring clip
12. Put the wheel back on, do up the bolts, lower the car.
13. Start the engine, depress the brake pedal untill it feel firm, then switch of the engine and repeat on side 2!
Think thats everything!
Hope its of some use. I will try and get a diagram up soon.
Alan