ZSNES board

Hey, I have extracted MKII sprites from the ZSNES. So I delete all the layers except the characters, save the screens I want. I then import them to Paint Shop Pro 7.2, try to rid all the black around the sprite, but it fills into my characters because they have black outlining. With Ultimate Mortal ...

Where is the read me?

Which ZSNES do I need to extract sprites? Layer removal basically is what I need. I would appreciate the help!