Desert Fox Deluxe, I want map edit, how to do it?

How can in Module Editor open a map file (map.png) and edit it in Photoshop?
Does anyone have a Desert Fox Deluxe map.png or similar?

Modules are ZIP archives. Unzip the module. You’ll find the images under images/.

sorry for my stupidity but I don’t know what you mean. Where are ZIP archives? I just have DFD_200.vmod file which I opened in vassale EDIT_module. What now?

Module files are ZIP archives:

ZIP archives are files that contain other files. You can open them with programs such as 7zip if you want something graphical; Windows file manager can open them natively. There are command-line tools like zip and unzip as well.