hdsk41b.zip is a pkzip'ed upgrade of hide-and-seek, a stego program for dos.
it is version 4.1, replacing 4.0 which replaced 3.5
it is backwards
compatible but significantly improved.
the -b release includes two new
utilites for making GIF files better for
use with hide-and-seek. the actual
hide and seek programs are the same.

hideseek.zip and hdsk40.zip are the
older versions and should no longer 
be used or distributed. hdsk41.zip is
the same version without the utilites

i am the author, shaggy@phantom.com