i've never done a rear one but if its like the front it won't be very difficult at all*
these jobs can seem daunting when contempating removing a flush expensive looking part with many fittings that are not immediately obvious, but in reality they are usually very simple.
take your time and give it a try, let us know how you get on with pics.
* edit: or maybe not!
Last edited by ajd; 01-25-2013 at 05:33 PM.