open up the bonnet then behind the lights are two black caps (there are 3 but you only need to remove two of them) you will know which ones because they are directly behind where the sidelights are,
remove these caps then just get your fingers in and wiggle the bulbs out, i find the best way is to gently wiggle it while pulling the wires, when you have removed the sidelight holders its just a case of a straight swap to your new bulbs, if you dont understand it ill try take some pictures after work today, however it is really simple so you should have no problems
NOTE, the SC sport has two sidelights on each side