It's a very easy job mate.
On the front there's two bolts that hold the top half of the caliper(sp)
on just undo the bottom one and swing it up out of the way and your
be able to take the pads out, then just push the pistons back in with
a big pair of stilsons(sp) refit the new pads,it takes longer to take the wheels off than change the pads

.
as for the rears do the same but this time you will need to take the hole
caliper off, it's two 17mm bolts undo take it off change the disc and refit
it's easy mate

.
if you take the lid of the brake master cylinder the pistons will go back a bit easyer but make sure you put some rag around it just incase it over
flow's when you push the pistons back.
if you get stuck give me a call and i'll talk you through it mate.
07815873574
rob