All backgrounds must be 640x352 in dimesnion.  24-bit is preferred for maximum colour.

You can use the tile alpha blend image to create a tiled set.  (Don't ask ok?)

They are grouped in numbers from 1 to 6...with a, b, c and d being the pictures of that group.

Groups are...TILES, FANTASY, NATURE, TREK, SPACE and SCAPES.
