Ye its not too difficult at all, more or less a undo the nuts and bolts, swap it over type of thing, not too involved. Basically get the car in the air with the wheel off, support the trailing arm with a jack or something, then undo the nut at the bottom of the strut will need another spanner to hold the nut as you unscrew the bolt). Then just go in the car and undo the nut at the top of the strut, make sure you have something to support the strut with so it doesn't just fall out. To get the spring off its just a case of pulling off the top mounting and circlip, I would use a spring compressor for safety but I do believe it can be done without. Re fitting is just reversing the process, not a difficult job to do.
Managed to get them off just fine the other day however, being a tit I unscrewed the nut in the car the wrong way and ruined it on the right hand side so the drill had to come out unfortunately to get it off. New shocks and springs came however yesterday when it came to fitting, to my delight I discovered the new shocks lacked the piece that holds the circlip in place even though the company I bought them from said they should fit. With my MOT retest due Wednesday, do you reckon I could get away with the normal shocks (shocks are fine but the drill has taken some of the thread with it on one of them) until my new one arrives?? Don't really fancy having to pay another £40 to get it through MOT. Ill attach some pictures to show damage to the shock and pictures of the new ones that don't fit. Here are some links to the images:
http://s938.photobucket.com/user/Joe...tml?sort=3&o=0
http://s938.photobucket.com/user/Joe...tml?sort=3&o=1
http://s938.photobucket.com/user/Joe...tml?sort=3&o=2