I have a great iPhone theme but would like to add some 40x40 TGA icons. I have found load of larger icons and have Paint Shop Pro 9 that can save tga files.

I have tried to save reduced sized colours and transparent background icons as tga but when I place on a theme Dock I can see the corner backgrounds that I canít see on an original tga icon .

Could someone point me in the right direction and tell me what mistake I am making please .