[pygame] Help with Imagemagick

["David Mikesell" <dave_mikesell@xxxxxxxxxxx>]

I finally got around to downloading Imagemagick and am now creating
spritesheets for my game.   I would like to eliminate PaintShopPro from
my workflow, however, as all I do with it is set the background
transparency on the images.   Current workflow is as follows:

- animate individual PNG frames in Blender
- create PNG filmstrip with Imagemagick "montage" command
- set background transparency of filmstrip with PSP (palette
transparency)

I've tried various montage switches for transparency, background, etc.,
I've tried converting to a Palette image, but I'm hacking now.   I
really don't know that much about image formats, I just knew how to get
this to work in PSP and would like to get that same result from IM's
command line.   Below is a link to one of the source frames from
Blender, as well as a link to it's description generated from the IM
"identify -verbose" command.   Can anyone show me an Imagemagick command
line that will set the background transparency? 

http://davemikesell.com/starship_explosion0020.png
http://davemikesell.com/imagedesc.txt