3 files?! It is supposed to link to a description of a large archive of source codes and documentation in LHa format. Do you have LHa first of all? If not download it from
here. It comes in a self-extracting archive which contains not only the LHa program but directions on how to use it as well.
Also try that AHI link above again since it should have a link to download the AHI archive. Make sure your web browser's MIME types are set to recognize a .lha file as an archive that should be downloaded directly to the hard drive.
Post back here if you still have problems.
