on an E9 you remove the long metal strip that runs along the dash (it just pops out) and then you can remove the 'lip' part. Then you undo the nuts holding the instrument panel 'hood' in place (from below) and gently lift the 'hood' a little, then you undo the retaining nuts (I think there are only two) from the back of the instrument panel, and then you slide the panel out. On the 2000CS the 'lip' part is different, so I am not sure what you're supposed to do. I'd start by finding the nuts for the 'hood' and getting the panel to slide a little, then you can at least remove the instrument you're replacing more easily.