Help required with interior trim!

[Christian H]

Hi,
This is my first post and am hoping someone can help!After buying some silver interior trim there is one of the items I am having trouble with,its the three strips that run across the dash I have looked for screws, pulled the edges even had a little poke with an electrical screwdriver!but to no avail I don't want to damage anything so have stopped trying for now. I would be very grateful for any pointers as the new pieces are starting to gather dust in my garage,
fingers crossed.