Hi,

If you use a GIF, try setting the Dithering to "Error Difussion" (default is none). If you use PNG or BMP, bump yourself up to true color to eliminate the banding. Ig you keep PNG to 256 colors, the same as GIF, set Dithering to "Error Difussion". JPG does not have this but it chunks away data so it is "full of holes".

Milt