All you really need is spermseg.tar.gz.  Uncompress it using the command
"gunzip spermseg.tar.gz".  Then enter the directory where you want to 
keep the program and issue the command "tar xvf spermseg.tar".  If you 
have problems using gunzip or tar, you can just take the individual 
files from this directory.  

Edit the Makefile as necessary according to the instructions in the 
Makefile.  You should only need to make sure that the correct compiler 
and compiler options for your machine are chosen.  To create the 
executable file, within the same directory as these files issue the 
command "make".  

For more details, see documentation file.