[Lomgren]

1. You first need to make a copy of your bigmap.txt and save it somewhere.
2. Now edit the bigmap.txt to include only your levels in it, in the proper order.
3. Open graal, and go into the editor. Press M, and it should generate a map based upon the bigmap.txt. Then save it as whatever you want.
4. This map is a 24bit PNG, which graal cannot read. You need to change it to a gif using a good graphics editor.
5. Finally, use the gif2mng program to convert the gif to an 8bit PNG. Your map should be done.

Hope that helps out.