I'm new to LaTeX. I just downloaded the elsarticle.zip folder from ctan.org but I don't understand how to use it. the zip folder has a .dtx, .ins, and .tex files. The documentation said to run the .ins file in my editor (I use miktex and texmaker), but when I did, it gave an error window saying 'couldn't start the command'. when I tried to compile the .tex file, I got a fatal error. Any help would be appreciated. Thank you.