Hi, I'm just doing mine now. £400 IS a rip off, as I'm sure I've seen/heard £200-250 is a more genuine ball-park figure (even from Renault dealers) if you do want to pay. I'm very fortunate, as I have access to a nice warm workshop (my work's) with quite a few tools and facilities (tea & coffee too!). Firstly, get the rear wheels off & get the back of the car jacked up as high as you can (but safely) to make access easy, then you won't have to take the axle off completley, just 'unship' it & pull it clear & support it on a jack/axle stands. Most of the bolts are accessible & easy to undo. The worst bit (as already mentioned on this site) is 'persuading' the bushes out of the axle - this IS going to take a bit of brute force, determination & perseverance! You'll be OK, if you have some mechanical aptitude & experience (I fix Harrier jump jets for a living, so it can't be that hard!!!). Try and get it into a decent (cosy) workshop first too, if you can. Good luck, but use this string for any advice/feedback if you need more help.
Martin White, March 2009