Hi. Don't know if you have started this yet, but I will let you into my experience on the removal of 3 different occasions. Firstly Treblet gives some good information, but if its anything like the times I had to do it, here is some further information. Firstly, I removed the arch liner to get access to the torx screws on the inside of the wing and to use both a pin and a sharp pointed knife to get the underseal out of the middle of each screw. The lower one isnt too bad, but to give a view of the higher one, I took the side indicator unit out, and its then easier to see what you are doing. As Treblet says, to get access to the screw nearest to the bonnet hinge, you have to remove the scuttle panel and that involves removing the wiper arms. Now comes the fun part (not). there are 2 philips screws at the top (painted) and 2 philips screws at the very bottom of the sill. These have underseal on them and then paint. The problems that I had, was that the top 2 refused to budge using a normal philips screwdriver and had to resort to using an "IMPACT DRIVER". This is an item that a bit is put into and then hit with a hammer to assist stubborn screws to turn (but be careful not to slip and hit the windscreen) Attention was then turned to the bottom 2, both of which had the screw heads dug out of underseal. I had to use the impact driver on these as well. Then its best if you score down the sill between the bottom of the wing and the sill as the underseal is very strong, and then from the top, gently prise the wing away from the sealant that is used between the wing and the main body.
