[yorkie_chris]

I've a tub of red rubber grease, no point buying a pound of it to do one caliper. PM me and you can have some for the price of postage, don't expect instant delivery though I'm busy with exams atm.

Right then, for the rear brake, it can be a bit of a git.

Pointy is a single pot caliper which is easier.

All you need to do is remove the pads, pump the piston untill it comes out. Remove the seals, scrape all the crap out of the seal recesses, thouroghly wash and wipe out the caliper with brake cleaner, pour a little fluid into the reservoir and let it run out of the caliper, wash it again. Let it air dry, brake cleaner dries pretty quick.

Clean the piston with something non-abrasive, the green scourer things are alright, they aren't harsh enough to score the piston.
Wash the piston in brake cleaner, allow to dry.

Then, wipe some red rubber grease around the inside of the seal recesses, put the seals in, put the piston in, then remove it again and wipe excess rubber grease off the back of it. Wipe this excess around the walls of the piston. Slide it right in, bit of a wiggle to get it moving and it shouldn't take more than thumb pressure.

Wire brush the back of the pads and other gubbins, wipe a little copperslip onto the back of the pads and reinstall. Red grease is better than nothing on any sliders which have rubber sheaths like on the front calipers (I'm not too familiar with pointy rear brakes)

Then bleed it through.