Drop me a PM whenever you are ready if you need me to have a look at it.... if you don't get a reply for a few days, it will be because I am out of town on business most of next week. I will look for it when I get back.

Meantime...try this:

http://www.jinnysplace.com/ws04/achannel.html

You can ignore the fancy messing around with the backgrounds and such like when making a unit card, but it is basically showing you the essentials.

They remove the background when they are finished...you actually won't need to. When you put your unit card in game, anything 'black' in the alpha layer will be invisible, so it doesn't matter what colour it is ;)