Accept the license agreement and proceed to 
   download a copy of IMB_2.3.tar.gz

   After unzipping/untarring the file:

   Follow the instructions found in ReadMe_first in the IMB_2.3 directory.

   Note:  The distribution comes with CR-newline at the end of each line.
          If that is a problem the following will get rid of the CR characters:

   > pwd
   IMB_2.3
   > mv src orig_src
   > mkdir src
   > cd orig_src
   > foreach file ( `ls -1` )
   > foreach? echo $file
   > foreach? tr -d '\015' < $file > ../src/$file
   > foreach? end
   > cd ../src