I have 6 pictures of the members of the band I work with. I need all the background taken out of the pictures so that only the musicians show. When finished I need all the guys in the pictures to look like they are all about the same height. I am not sure of the correct term to use but I want to be able to put each picture on any color background...believe it is called "transparent" Pictures #2, 3, and 4 will need the contrast adjusted so they don't look quite as dark.