For removing the kit, the most useful tool believe it or not is one of these
Stanley Dynagrip Chisel Knife 25mm 0 28 650 : Tooled-Up.com
The kit will have LOADS of silicone style adhesive all the way round and a stanley chislel knife is the perfect tool for the job,
Easy peasy - there are two cross-thread screws behind each of the rear wheels, situated right at the bottom of the wheel arch. Take these out then just use the chisel knife all the way round to cut loosen the kit. Apart from the 2 screws it is only held on with adhesive.
Again, two remove the two screws at either end and then there are 4 or 5 to remove underneath the front (I think). The front one is easier to remove if you jack it up, so you can reach underneath for easier access, but is by no means essential.
Then it is held on just by adhesive, but loads of it, and it is very hard to get the angles and leverage required in a lot of places because of the wire mesh protecting the rad. This was a ***** of a job and took me many hours.
There are 4 or 5 5mm screws to the rear of each side skirt (when I say rear I mean the back of the actual skirt, not the part towards the rear of the car).
Then there are 7 or 8 black plastic clips along evenly spaced along the front of the skirting. The problem with these is that they are very brittle and also there is adhesive spread along the whole length of the skirting. You need to get the chisel in to unstick the skirt from the car body but it is virtually impossible but it is impossible to do this without taking out some of the clips.
Once you have cut through the sticky stuff, if you have any clips intact the skirts then slide forward about an inch before they will drop off.
It will save you much time if you can just buy some new clips, then you don't have to worry about the old uns and removal will be much quicker.
Oh yeah a rubber mallet will come in handy for whacking the chisle to cut through the adhesive on the side skirts.
I hope that helps, good luck.