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.