I have been told that Transparency, a program for the Mac, allows Macintosh users to transparentize images. I don't know anything about this program aside from what its documentations says, so please don't ask me for help.
I have a BinHex'd copy of Transparency.
I have a copy of some release notes for Transparency:
You may follow this link to return to my page about transparentizing GIFs
-Eric Mumpower (nocturne@mit.edu)