To create your own DEM, you need the HOG, Transdem or some other payware program ... but to simply have the lines show up on a DEM, that was made by someone else, you need only the textures.
I want to create my own DEM map and I know how to do it. The only problem is that I cant download HOG. It says: Website not available, maybe its just Chrome doing this. I`ll try Internet Explore (oh God!) and reply.
Make sure if you are running IE9 and up that you have compatibility mode enabled as that may fix the problems. If not try another browser such as Firefox.