There's 2 black plastic bolts at the top which look like screws, just pull them out with something! Don't worry if they break, you don't really need them. Also, there is a bonnetlid button which just unplugs from the bottom, easy. As for removing the grille, it's just a case of undoing all the clips at the bottom which join the bumper. You need little hands for this. Just keep working the grille off, and dont worry about flexing the bumper too much, that's what its meant to do. Other grille just goes on in reverse order, but it's quite difficult to line it all up, as renault are p*sh at making things fit right. Eventually, it will clip into place.