lemmegetuhh

I dont know i should be posting here because im new but when i convert the png (png file size was like 90 x 110 or less idk) (Also it was individual images for the sprites) to bmp then made it to a pcx in ff3 it was a green screen, i didnt mind it at first, but then i tested it out it was still there, I opened in winmugen and mugen 1.1 i activated transparency, still there. I used ff classic too. Is there a chroma key somewhere or any button to remove it or do i have to use a different method for it. Or just get a all in one character sprite sheet