Ah, that was exactly the piece of info I was asking for: where to put the two files, and it works. If you have not tried it yourself, try the hi-vis replacement, imo it gives a better visualisation of the contours of the 3-dimensional terrain: it is easier to form a mental impression of where ridges exactly are, for example.
http://cota.matrixgames.com/images/hi_vis.jpg
An alternative is this:
http://cota.matrixgames.com/images/capt_big.jpg
Possible that I show up with more questions in the coming days, maybe.