making a transparent png

[Ben Skelton]

Hi all

I am having real trouble making transparent pngs. My lovely airbrushed art is 
turned into ugly solid (opaque) colour when I save as a png. Is there a 
trick, or a RightWay, to make these things? Maybe I have some broken 
software, I am running gimp as per suse 6.4.

Any ideas?

--Ben