Hello All, First Post and I'm already asking a likely stupid question.
Not of to a good start am I?

Okay, so I'm Using Marble. My goal is to use it as a free global mapping software to map out national borders and infrastructure for a fictional planet for use with a Sci-Fi/Fantasy Risk or EU3 style Grand Strategy Game abomination.

I already have a planet map created (use a fractal map generator or five) and exported as a 4000x2000 pixel .png map. I want to import it and use it as the base map, on which I will draw national borders and road networks (especially road networks).

I tried using the 'create new map' wizard, and got to the 'finish' button, pressed it, confirmed that the folder is now in my Roaming/.marble/data/maps/ folder, and everything looks like it should work, but it doesn't. My new map doesn't show up in the 'Map View' area on the left side toolbar window area. Also, trying to open the map directly doesn't work, because there aren't any map files to open.

I think my problem is that I made a new 'theme' that is trying to apply itself to Earth (given the map folder put itself into the Earth Folder, that seems likely) however event manually trying to move the file to a new folder didn't work.

So I need some help, how do I go about creating my own personal map of a not-Earth or Moon planet?

I downloaded a Mars map, I'm going to see if I can reverse engineer a new map from that, but we'll see. Figured I would post this anyways just to get the question out there.

I thank you all for your time;
-JC

Addendum: Well that didn't work, I managed to get the name of the planet to show up in the 'Map View' however when I click the name nothing whatsoever happens.

So, anyone? Any Ideas?

From my analysis of the Maps shipped with Marble, you may need to edit the <mapname>.dgml file which is in the map folder.

The elements to change are <name>, <target> and <theme>. <visible> should also be "true".
From what I can tell:
<name> is the proper name, which is displayed to the user.
<target> is the first folder it is in, "earth", "moon", "mars", etc.
<theme> is the name of the folder inside the <target> folder. (clementine with the moon theme for instance)

You may need to restart Marble for it to show however.